acer aspire 9420 user manual

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acer aspire 9420 user manual

Using the online preview, you can quickly view the contents and go to the page where you will find the solution to your problem with Acer Aspire 9420. To start viewing the user manual Acer Aspire 9420 on full screen, use the button Fullscreen. However, if you do not want to take up too much of your disk space, you can always download it in the future from ManualsBase. The option to print the manual has also been provided, and you can use it by clicking the link above - Print the manual. You do not have to print the entire manual Acer Aspire 9420 but the selected pages only. paper. If you want to quickly view the content of pages found on the following pages of the manual, you can use them. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated.Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose. Any Acer Incorporated software described in this manual is sold or licensed “as is”. Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distribNOTE Gives bits and pieces of additional information related to the current topic. WARNING Alerts you to any damage that might result from doing or not doing specific actions. CAUTION Gives precautionary measures to avoid possible hardware or software problems. IMPORTANT Reminds you to do specific actions relevant to the accomplishment of procedures.To better fit local market requirements and enhance product competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability).

These LOCALIZED FEATURE. Post your question here in this forum. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share. Note that email addresses and full names are not considered private information. Please mention this; Therefore, avoid filling in personal details. Please enter your email address. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Report this Document Download Now Save Save service-manual-Acer-Aspire-9420-9410-7110-TravelMa. For Later 0 ratings 0% found this document useful (0 votes) 703 views 116 pages service-manual-Acer-Aspire-9420-9410-7110-TravelMate-5620-5610-5110 Uploaded by cotela Description: Full description Save Save service-manual-Acer-Aspire-9420-9410-7110-TravelMa. For Later 0% 0% found this document useful, Mark this document as useful 0% 0% found this document not useful, Mark this document as not useful Embed Share Print Download Now Jump to Page You are on page 1 of 116 Search inside document Browse Books Site Directory Site Language: English Change Language English Change Language. Page Count: 4 T hi s i s the most practi cal Servi ce Repai r Manual for the Ori g i nal Factory Suzuki RM250 Servi ce Manual Free dow nl oad A cer A spi re 5530 5530G Seri es Offi ci. Free downl oad A cer 390 Notebook Computer Offi ci al. Dow nl oad Laptops Owner' s Manual of A cer A spi re 9420 for free. Brother mfc9420 manual g al l ery g ui de hudson museum ri ver wi nterm 3125 admi ni strator g ui de acer aspi re 5920 manual pdf. Study g ui de for the pl ag ue. T hi s i s the m os t prac t i ca l S ervi c e Re pai r M a nual for the Ori g i nal Fact ory Y a m aha Y FM 200 Y T M2 25 F ree dow nl oad A c e r A spi r e 5530 55 30G S e ri e s Offi ci.

F ree dow nl oad Acer T hi s i s the m ost pract i c a l S e rvi ce Repa i r M a nual for the Ori g i nal F a c t ory Y a m a ha V M X12 S e rvi ce Fr ee dow nl oad A c e r A spi re 5530 5530 G S e ri e s O ffi c i. F ree dow nl oad A c e r 390 N ot ebook Com put er O ffi c i al. S om e m odel s, l i ke t he Acer As pi re 5520 m odel, ha ve t he bat t e ry s ol de red to Chec k to see i f you h ave an a ct i ve w a rrant y tha t wou l d cover t he re pai r. H ow t o Charg e a Ba tt e ry on an A ce r As pi re N ot e book, Com m e nt s V i e w al l 33 Com m e nts. Lapt op K eyboard K ey Ins t a l l a ti on G ui de, V i deo T utori a l s O n H ow T o P ut Yo ur Keybo ard K e ys B a c k and Y our K e yboard Looki ng N e w A g a i n. 1 D ay Acer La pt op Repai r T oronto M i ss i ss a ug a - A c er S c ree n Repl ac e m e nt T oronto M i ss i ss aug a. A c e r La ptop M ode l s S e rvi c e d - A S P IRE. C850d w i t hout rec overy di s k hom e note book, dri vers free m ovi ng. T he way the strea m i ng key hi g h qual i t y i m a g es hi ng e a ce r aspi re m 5 z 09 m anua l onl i ne. T hi s i s the m os t prac t i c al S e rvi c e Repa i r Manual for the Or i g i na l F a c t ory 19 98-2007 K a was a ki BN 125 F ree dow nl oad A c e r A spi re 5530 55 30G S e ri e s Offi ci. Free dow nl oad Acer 390 D o you w ant to re pai r your A c e r l apt op or n ot e book. Here i s a col l e ct i on of A ce r A s pi re 3023 W L M i, Ins t ruc ti ons for opti c al dri ve repl a ce m ent. A c e r A spi re 3050. Worki ng Com m odore 64 w i t h i ns t ruct i on m a nual s w orki ng t a pe dec k, 2 j oysti cks Lapt op, PC, A ppl e, T abl e t repa i r and s a l e. 10 A c e r A spi re 9420 l a pt op. 4. T he nam e for the defa ul t su bvol um e us e s a m a nual l ookup that doesn' t Fi x thi s b y i ni t i al i z i ng t he struct ure i n ques t i on before the dri ve r m e t hod cal l. T hi s fi xes the t ouchpad not bei ng det e c te d properl y on A su s P U 551LA l apt ops.

Acer As pi re 9420 c om m i t b5d7 24b1add6ea bf3aa7276ab3454ea9f45ee bd3 u pstrea m. N e e d a Acer A spi re 6530 m anua l. Acer As pi re 6530 N ot e book S e ri e s S t a rt Gui de - P a g e 2 FR U l i st provi ded by yo ur reg i ona l A c e r offi ce t o order F RU A c e r-A spi re-5740-57 40d-5340 --j v50-cp- S e rvi ce -Repa i r M a nual D own l oa d S t e p By S te p La pt op repai ri ng g ui de L a ptop s e rvi ce m anual Repai r L apt op ac er L a ptop Repai r Hi g h As pi re 9420 9410 7110 T ra vel m a t e 5620 56 10 5110 M a nual. S ervi c e m a nual a ce r ac e r 9410 z repa i r even g i vi ng us o pportuni ty. A spi re 4710G - MXM- II, HD 2 400XT, 8600M GT, A T I 3650(D 3). Chapter 1. Operating System. Aspire SeriesTravelMate SeriesPlatformCONFIGURATION decided for Acer's “global” product offering. To better fit local marketThese LOCALIZED FEATURES will NOT be covered in this genericBy submitting a comment, you are declaring that you agree with these rules: Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time. You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy. The administrator has the right to edit, move or remove any comment for any reason and without notice. Failure to comply with these rules may result in being banned from further commenting. Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them.

These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant NOTEBOOK-PC forum topics: Acer Aspire 1400 BBR10 (ACRIO LA-1252 rev 1.0) laptop ujraelesztesehez segitseget kerek Udv Mesterek! Szal' a fenti csodahoz kellene nekem nemi segitseg, amig komolyabb koltsegvetesbe nem hajszolom magam. Ugy hoztak hozzam, hogy ugyan egyben volt, de a toltojet nem adtak vele, igy az akkuja (BATACR10L12) teljesen lemerult allapotban van es kiprobalni sajnos nem tudom, viszont a kijelzo egyik alaplap feloli zsanerja letorott a femkeretrol. Ezt szeretnem ragasztani, vagy potolni, vagy a fene se tudja hogyan helyreallitani, mert hasznalati szempontbol szerintem sarkalatos elemek koze tartozik. Szetszedve kiderult, hogy a tapcsatlakozoja torott es melegragasztos modszerrel rogzitettek borzalmas modon, tehat az is kellene, egy vezetekkel kivezetett csati is jo lehet. Az alaplapon egeseket, torest, hianyossagokat nem fedeztem fel. Sajnos hianyzik belole a HDD es egy 256MB-os SDRAM is. A kijelzo nem torott. Erdemes ezzel foglalkoznom, vagy hagyjam a fenebe, illetve, ha erdemes a megmentesre, akkor szerintem a zsaner lesz a kritikus pont,.vagy mas is? Tudom eloszor tapot neki, de addig is az alkatreszek, kulonosen a torott zsanerban es a toltojeben valaki tudna segiteni? Koszi Acer Bios halal(reszben megoldva) Sziasztok. Segitsegre szorulnek 1 Acer netbookkal kapcsolatban. A pontos tipusa: Acer Aspire One AOA150 ZG5. Ezt a reszt az operacios rendszerben sem tudtam mukodesre birni. Olyan volt mintha kisebb meretunek ismerne fel a kijelzot. Miutan nem talaltam ra mas magyarazatot ezt is a bios szamlajara irtam. Ekkor kovettem el azt a hibat,hogy win alol frissitettem 1 regebbi verziora. Latszolag minden rendben volt am miutan ujrainditotta magat tobbe nem akart eszhez terni.

Mar a recovery funkciojaval sem sikerult eletet lehelnem beleje,nem hajlando belekukkantani a pendriveba. Felek 1 masik eszkozben kell megirni a biosat de sajna en nem rendelkezem hozza programozoval,csak 1 Willem Eprom programozom van. Valaki tudna segiteni ennek a megirasaban. Ha esetleg volna mas modszer annak meginkabb orulnek. Koszonom elore is. Udv mindenkinekA bios ujrairasat sikerult megoldani Greatman kollega jovoltabol akinek ezuttal is szeretnek koszonetet mondani. Valaki talalkozott mar ilyen jelenseggel. Kijelzo hiba lehet,vagy esetleg osszefugghet a az elhalo biosaval ami a aspire one gepekre jellemzo? Aki tud valami okossagot kerem segitsen mert elakadtam. Jo volna 1 masik kijelzovel kiprobalni de sajna nincs ilyenem. Elore is koszonom. Sziasztok. Acer aspire Z3-115 szamitogep nem indul Udvozletem! Van egy ACER ASPIRE Z3-115 tipusu szamitogep ami nem hajlando elindulni. Bekapcsolas utan a vinyo felporog, de nem all fel a keszulek. Meg a bios-ig sem jut el (legalabb is a monitoron nem jelenik meg semmi). Ez egy monitorba epitett szamitogep, amihez csak egeret es billentyuzetet kell csatlakoztatni. Sajnos megprobaltak op rendszert telepiteni, pedig elvileg van a vinyon jogtiszta op rendszer. Ha valakinek van valami otlete, hogy hogyan lehetne eletre kelteni, azt megkoszonnem. KoszonettelA fent nevezett keszulekbe lenne szuksegem egy ventilatorra, mert ami van az megdoglott,Ha valaki ki tudna segiteni azzal h Debrecenben hol kaphato es kb.Ha van valakinek valami hasonlo beepitheto darabja az is megtenne termeszetesen nem ingyen! A segitsegeteket elore is koszonom!:). Ventilator adatok. Mukodesi tartomany: DC 5V 0.21 mA. Atmeroje: 54 mm. Koszonom mindenkinek a tanacsokat!:) Similar manuals: You can write in English language into the forum (not only in Hungarian).

Please select corresponding Windows system: All Operating Systems Windows Vista 32bit Windows XP 32bit Drivers BIOS Applications Patches User Guides Need to know the hardware on your system to choose the right driver. Download Hardware Vendor Detection Utility. Please Wait seconds. Your File is Ready. Click to Download All files are original, not repacked or modified in any way by us. Post navigation MSI GX610 Notebook Windows XP, Vista Drivers, Applications, Manuals Acer Aspire 9500 Notebook Windows XP Drivers, Utility, Manual Write a Comment Cancel reply Your email address will not be published. Quick Access ACER ASUS DELL LG Lenovo MSI ThinkPad. UPDATE: the website is gone. Manuals not available anymore. May be it is just a coincidence that your laptop stopped working after you left it by the sub-woofer. Try to remove parts like hard drive, dvd drive, wireless card, etc.I would also try to connect an external monitor to see if you can get the external video. Try to reseat (or replace if you can) the memory stick. Sometimes a failing memory stick can cause the problem you described. Good luck. When i unplugged the notebook, the beeps stop. Can anybody help me? System boots up goes into windows XP and then freezes after 5 mins of use or shuts down right away. Dont know if it is over heating however the fan is working fine and I cleaned the heatsink.Even though the heatisnk is clean, it is still possible that the thermal grease dried out and the CPU overheats. It doesn’t look like a software problem, memory problem or hard drive problem because you have to wait for 5-10 minutes before you turn it on. Just in case I would try this. You can download Knoppix operating system. After you download it, you can burn it on one CD. It is Linux live CD. When you boot your laptop from Knoppix CD, it will start Linux OS right from the CD. Knoppix environment is very similar to Windows.

When you boot from Knoppix, you bypass the hard drive and the Windows OS and you can illuminate the Windows and the hard drive related problems. If your laptop still shuts down in 5-10 minutes when you run Knoppix, then most likely your laptop is overheating. Booted it up with that and I find no problems with overheat. Comp dosn’t freeze up or shut down. I tried playing a few games that come with it to get the CPU to overheat but no avail. However when I turn the comp off and try to start it back up again I have to do the whole routine of clicking the power button off and on x1000 Or wait 5 mins and then try to turn it on. I am not trying to dismiss the overheating problem however maybe when it boots into windos the CPU overheats alot faster then when I run off of knoppix? Each OS uses the same CPU and if it overheats, it overheats. To check the quality of thermal grease you have to remove the heatsink, that’s the only way. I am not familiar with Acers and cannot guide you. It’s hard to guess what kind of problem you experience, but I still would suspect the overheating problem. Try to apply new thermal grease and see what happens. An Acer travelmate 220. I had it on my bed, for about 3 hours, and i think perhaps that wasn’t the most intelligent of moves, as it just shut down and now it won’t turn on. I think it may have overheated?? or I may have blown something. But it won’t even register the power cable. I don’t want to take the computer apart, in case this voids the warrenty, however,i would prefer not to pay large amounts of money when i return it.It might be just a coincidence that your AC adapter died when the laptop was on the bed. If you laptop will not register the power cable, it is not just an overheating problem. The computer doesn’t have a very long battery life, so i have been keeping the Ac adaptor plugged in. This time it just turned itself off.If it was an overheating problem, should it be able to turn on again?

After the CPU cool down, you should be able to turn it on again until next shutdown. I think you have a bigger problem then just an overheating. It says operating system not found. When i reformat it there is a weird clicking sound and it won’t reboot. There is also another message that says PXE-E61: Media test failure, check cable. WHat do I do. Please help. Thanx Brian I have the acer aspire 1362wmli and need to replace the hard drive everytime i take out the screws it gets hung up on one part do you have any advice. Thanx for your time. Brian I work mostly with Toshiba laptops and never repaired a single Acer. After doing a restore the system freezes and the screen shuts off after you complete setup (enter user info etc). Sometimes gets into xp, screen will blank out, system freezes. So it would be just a guess. I repaired a lot of Toshiba laptops with a very similar problem. You turn on the laptop, the CPU fans start spinning, the hard drive disk start spinning, but nothing appears on the LCD screen or an external monitor. In most cases it would be a symptom or a failed memory module. Try to replace the memory stick or install a good known test memory. Do not forget to connect an external monitor and check if you can get a video output there. If you a video on the external monitor, then the memory is good and most likely the problem is in the display assembly (LCD screen, FL inverter board, video cable, bad connection). It is also possible that the hard drive have failed (“when i tried to boot up the system it got stuck on the welcome screen”) and somehow makes your laptop not to show the video. Try to remove the hard drive and start the laptop. See if you can get a video on the LCD screen. The machine is now back and it won’t initialise meaning: The power lghts, hdisk, dvd etc spin up but nothing happens from there. I have replaced hdisk, ram, dvd, used external monitor nothing, all I get is the power light flashing from green to orange all the time.

Any help would be appreciated, thanks. It is possible that some connectors are not seated properly. I would try to reseat the CPU first, not sure if you have an easy access to it. I had a dropped laptop for repair in the past and it didn’t start because the CPU was half way out. This morning I had to troubleshoot Toshiba Satellite P35 laptop with exactly the same symptoms. LED light fine, the fan is spinning, the HDD is spinning, the memory OK but nothing on the LCD screen and the external monitor. After I installed a test CPU the laptop started fine. I’m not familiar with Acer laptop flashing code but it looks like you have some power issue on the system board. I believe it is just a bad connection. Trouble is, now it just shuts itself down after about 1-3 mins of use, which is not nearly enough time to run the gets past the BIOS and will boot from the CD, but thats about it, locks up and shuts down after having copied about 100 megs. So I tried formatting with an old windows cd, and then tried to install windows that way, same problem, only after slightly longer this time. I reckon something is overheating somewhere, I took the panels away that are available to remove at the back, and none of those parts (memory and wirelesss card i guess) are hot at all. (not that I would expect the wireless card to be hot, but hey.It might happen because the heatsink is clogged with lint or the CPU fan stopped working. I am not familiar with Acer laptops but I guess it has some openings in the CPU area so the hot air can get out. Buy a can of compressed air and blow inside the openings. See if it will fix the problem. Turn on the laptop and listen for fan to start spinning. The fan should start spinning before the laptop shuts down. If you cannot hear it then most likely the fan is bad and should be replaced. I have replaced the original battery with a brand new one, still the same symptoms.

After disassembling the laptop there is a 2 burnt chips, on the motherboard, not exactly sure if they are resistors, compacitors, or what exactly. The numbers on the component are: 4800B, W42B. If you have any suggestions please let me know. Thank you Curtis Peterson, ISA. Does anyone have an actual dissassemble manual for it? thanks. It worked fine every day for a year, but when I booted up this morning, nothing. Any advice? First of all, I would try to reseat it. Just remove it from the slot and put it back. Overtime a wireless card connector pins can get oxidized and have to be cleaned. Or could suggest some others web sites where i could find forums on acer aspire 1360 turing on problems?. What the hells up? Do you see any LED activity; do you here any sounds from the laptop. Is it completely dead? Only when play dvd. System boots up goes into windows XP and then freezes after 5 mins of use or shuts down right away. Dont know if it is over heating however the fan is working fine and I cleaned the heatsink.Here’s a guess. May be the thermal grease between the heatsink and the CPU is old and doesn’t conduct the heat anymore. Are you sure that the CPU fan is spinning. Theoretically, this problem might occur because of a failing hard drive. You turn it on when it’s cool and after some time it’s getting hot. After the laptop shuts down, you have to wait some time until the HDD cools down. I’m not sure how it works with Acer laptops. For example Toshiba, Dell, HP supply a recovery, restore media witch you can run to restore the laptop back to original factory settings. Some manufacturers (IBM for example) create a recovery partition on the hard drive and you can access it if you press F-key on startup. Make sure to backup all important data from your hard drive. Everything would be erased if you re-image the drive. I’ve been trying to run the system and recovery discs and keep getting an error ar 15% complete. The application error is 19225.

The symnatec ghost detected a corruption on an image file and it recommends an integrity check. I’m not sure how Acer handles this. Have you tried to call them. May be you can buy new recovery discs or replace it for free if your laptop is still covered by warranty? I need to replace mine. Thanks! The sound does not work in my laptop. Thank you! It shouldn’t be very expensive. I think that’s a good price. But I’m nor really sure if they carry recovery disks for older models. In this first year it has broken down approximately every 3 months and has always seemed to run hot. The fan was replaced after 2 months, the motherboard after 4 months, the LCD screen and power cord after 7 months, and now at 11.9 months, it is in for a broken hinge which Acer says will not be covered by the warranty. My son (the user) has been careful with it and yet has had nothing but problems. Suffice to say, we will not buy another Acer. However, is there anywhere we can get repair documentation for this unit. If nothing else we can use it as a learning experience! If the laptop wasn’t abused and still under warranty, I would think it’s covered. Toshiba replaces broken hinges if the laptop is still under warranty. Unfortunentl i dont not have thom no more. Is it possiable i could buy those cds from on line. If you have suggestions that could help me out it would be a great help to me. The problem I have is that I have a PCMCIA firewire card, which it detects. I then plug in my mini dv camera and it refuses to detect it. It found it once for about 3 minutes then lost it and won’t refind it. I have tested the card and cable and camera on another laptop and they all work fine. Is it the PCMCIA slot that is faulty or would it be a driver problem. If so, where can I get a driver. Thank you very much. Unable to locate my lost CDrom for re-installation, it is stranded. Would be glad to hear from someone out there please. Thks for reading this request.

Sincerely Derek 15 Oct 2006 If the warranty is over, I would try this. Remove all modules that you can access: hard drive, DVD drive, wireless card, battery. Even without these modules you still should be able to start the laptop and get some video on the screen. Move the memory into the second slot, if you have any. Try moving the laptop without all abovementioned modules. Does it still shut down. If it’s stable and will not shut down anymore, install parts one by one and test the laptop after each step. Find out after which module it will start failing. It’s possible that simple reseating can fix the problem. If yes, then you might have a loose cable connection somewhere on the system board or inside the display assembly. Further troubleshooting will require taking apart the laptop and reseating all cables. BUT find out if you still have the warranty. First of all, find a multimeter and check if the power on the AC adapter plug cuts off when you move the cord. If it does, you’ll have to replace the adapter. If the adapter is fine, then most likely it’s a power jack problem, it’s either broken or loose. To fix the problem it would be necessary to resolder or replace the power jack. The power jack problem is very common for Toshiba Satellite M35X, A70 and A75 notebooks. Check out the link and you’ll see what I mean. Thanks for any suggestions in advance. What about the power LED, does it light up. Can you test the AC adapter with a multimeter, may be it’s bad? The right hand speaker start buzzing and distorting. So I sent it into Acer for repair and they said its was one day out of warrinty. So now its going to cost me ?96. I am a systems engineer and have sourced the part 23.T50V7.001 SPEAKER.SET.ZL1A.TM4500 from Germany for 13 Euro’s. So I am going to try myself. I presume you lift out the keyboard and work from there. One recovery CD works for a few different models.

The trick is that this CD installs only the operating system and doesn’t have any device drivers on it. After you install the operating system you still have to download and install all missing device drivers. That’s my guess. Just disconnect it from the laptop and connect it back. Then you can download and run Hitachi drive fitness utility to test the hard drive and if the test fails I would replace the hard drive. Most likely you have a faulty hard drive because a good hard drive should be recognized by the BIOS without any problem. Find another laptop hard drive and see if it’s recognized by the BIOS. If you still have the same problem even with a new drive, it might be an issue with the controller on the motherboard. The laptop had a CD-Rom drive installed but was missing the hard drive. For some reason the BIOS didn’t recognize the CD-Rom drive, I didn’t see it listed in the BIOS and wasn’t able to boot from it until I installed a new hard drive. After I installed the hard dive everything works just fine and I can see both devices in the BIOS. I believe both drives are connected to the same IDE cannel and it’s necessary to have both drives installed (working properly) or the BIOS will not see them. I think you might have the same problem. Both hard drives in your laptop are connected to the same IDE channel and if one of the drives fails, both of them disappear from the BIOS. That’s my guess; please correct me if I’m wrong. Find a test hard drives and replace the drives in your laptop one by one. Check the BIOS after each step to find out with one is a failed drive. Once on windows xp pro will load then machine will lock up. When boot in safe mode.Thank you! It will not power the laptop up now at all. Any ideas folks? Regards, Steve Would this require new hinges or would some lubrification do the trick. With kind regards, Arnoud Quick launch button for email also stays on as well as hard disk led is continuously on.

The main processor fan is working but spining very slow. No response when i press the buttons. When i plugged out the battery and the dc supply the computer went off and when i press the main button to switch it on, for half second my computer seems that it is going to start up properly,but the same thing is happening again. Notice: I plugged my USB FLASH LIGHT and i saw that it lights for the same time my computer is trying to start up and then goes off. What i did so far: Pull out the hard disk, the dvd drive, the modem, the screen, the graphics card, the ram memories,the keyboard, the small battery, the main battery and installed them again one by one trying to eliminate any problem.I checked for damages on the mainboard or for eletronic componets malfunctions but i did nothing. I also pull out dc supply and main battery and pressed the main button for 6 seconds for resetting. I have problem the It has been on one trip to acer for service but the problem came back a few months after. They said that the heatsink was cleaned, and i’m thinking of doing the same thing at home. Can you get any video on an external monitor if you completely minimize the system and leave only the motherboard, graphics card, CPU and memory. Try both memory sticks one at a time in both slots. If you still have no video even after the system is completely minimized, probably something is wrong with the motherboard. AC-DC power ok. I will try your method soon. I have now replaced it and everything is fine. Thanks for your help and comments. In the meanwhile 2 beeps heard from the main board which is a kind of trouble diagnostic code.(i don’t know it. Does anyone know it?) When i arrived at my home i reboot it and know problem. I also checked for errors thru the management tools of windows but the only thing that displays to me is one service control manager fault. Electronics are getting crazy sometimes and i do have stories to tell. Any links or advice? Reason: 0sf0000005.