Question about Acer Aspire L100 PC Desktop

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Computer shuts down for no discernable reason

I have an Acer that I recently moved from my office to my home. It shuts down completely (like it is losing power) on its own. The monitor is connected to the same power source and it keeps running. I have taped the power cord into the back of the computer but this didn't help. The shut down usually happens within 30 minutes of firing the computer up but it can be a few minutes or over an hour.

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  • Eddie555 Mar 05, 2008

    Same problem. Power up and within 30 minutes it just shuts down on its own. If I power it back up, it usually shuts down within 30 mins.

  • freddyfox Apr 02, 2008

    Mine shuts down for no apparent reason. If I leave it shutdown it sometimes starts up again with no intervention from me! There is no fixed period of time before the shutdown occurs, sometimes after only an hour of use, sometimes after many hours or not at all. I have found that tapping the PC on the top can sometimes start it again, but have checked for loose connectors and all OK. Perhaps there is a bad connection inside the PC?

  • PainterShop Jun 14, 2008

    I got a new Acer Aspire L100 2 weeks ago, within a week it kept shutting down and restarting, then it would shut down immediately on start up, we discovered the fan wasn't working properly, off to the repair shop it went. I got a new one in the meantime and this one just reboots for no apparent reason, it has done this since day 1 befroe I added any programmes to it. I'm waiting to hear from Acer what they think the problem is, I don't want to send it to the repair shop as it will take 15 to 20 days to have it returned. I get the blue screen constantly then it asks if I want to start it normally which I do, it works for awhile then it just happens again.

  • jeromes Jul 17, 2008

    I have the same problem, but I'm pretty sure it's linked to CPU overtemp: I'll try the solution of putting proper thermal grease and report it later.

  • Anonymous Nov 12, 2008

    My system also powers off while doing work for no discernable reason. I got this system as a simple desktop, but anything that make the system work hard (As far as I can tell because the fans go full speed), it will usually power off instantly after a short period of time. This is very annoying. Size was of particular importance at the time I chose this system. I think I will send this system to the scrap heap as I have no desire to modify the case or to deal with a manufacturer's poor quality and testing.

  • Nora Cowan
    Nora Cowan Feb 03, 2009

    i have a acer aspire L100 and i have had it past the warrenty unfortunantly it has not been able to log back onto windows i was not aware that i had to burn a erecovery disk when i got the computer cause all the others i had sent one with them. i now am needing it fixed before the rental company comes and gets this one can someone help me out i would appreciate it. thanks for any help that is possible i can't afford to take it to the computer shop and i can't afford to purchase a erecover disk.



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Wow........wish i would have found this site a week ago. i have been working on one of these acer L100's for a relative and these are some things i have discovered.
1-the connection on the back of the CD drive is week. if it lose its connection , the computer imediately shuts of.
2=heat management is controled by advanced power controls related to temp sensors fan speed and poprocessor voltages. if the bios, cmos or os power management is not working properly lots of weird things happen to the computer like inconsistent boots, graphics glithes and failures and just plain old overheating because the smart fan does not ramp up the fan whenever it gets hot or is using more power.
i was able to fix this one by resetting the cmos. you do this by unplugging the power and removing the 3 volt battery on the motherboard. unfortunately it requires quite a bit of disassembly like changing the cards.
i plan on looking for other solutions like flashing the bios or a way of resetting it in the operating system.
i hope this is some good info and another suggestion is bios updating. i finally found some info on that at acer, but still do not know if this version has an update.

Posted on Sep 29, 2008

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I've had the same problem with mine since day 1. what happens is when the amd processor heats to 90 degrees celcius, it shuts off. this is the highest temp setting in the bios. to fix the problem i went into the bios and disabled the variable fan speed setting. now the fans run at full speed and the processor stays around 50 degrees celcius. the problem now is fan noise! thanks acer!

Posted on Jun 29, 2008

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  • mstradman Jul 02, 2008

    after setting the fans at full speed, it worked better but still shut down. i went ahead and took it apart and cleaned the old thermal grease off the processor and heatsink. then i used arctic silver 5 and put it back together. i enabled the fan controller in bios and now it is running cooler and quiet. i'll see if this continues to work and report back.

  • mstradman Jul 06, 2008

    it is now running as it should. the problem was the cheap thermal grease they globbed on the processor. the temp stays around 40 degrees celcius and the fans are almost silent. it's too bad that acer tech support won't give you this information.

  • mstradman Jan 10, 2009

    still no problems after replacing thermal grease. best little box around. if you want to get rid of yours, let me know.

  • mstradman Jan 10, 2009

    still no problems after replacing thermal grease. best little box around. if you want to get rid of yours, let me know.



I've had the same problem with the computer shutting down randomly. It started about 6-9 months after I bought it. I thought it was from new anti-virus software, but apparently it is the overheating issue. I took the side panel off and have a small floor fan aimed on the computer, but it still shuts off. It is very annoying and I'm very unhappy with it.

Posted on Jun 07, 2008

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After about a month of shutting down unexpectedly mine finally died altogether. (although the blue LED remained lit on the case)Had a PC technician look at it, apparently shuting down is a common problem with the Aspire L100 due to excessive heat. What he found was some damaged components on the motherboard relating to the 12V power supply. The 5V supply was fine which explained why the LED was lit and the bios beeped as it tried to boot. The 12V supply was non existant and therefore no fan or hard drive available. I was told it needed a new motherboard and will have to send it back to Acer for repair. The Aspire L100 motherboard is a proprietary one and cannot be replaced with a standard mini ATX form. Out of warranty so guess this is going to cost me!

Posted on Apr 21, 2008

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I have an ACER COMPUTER and we just bought it and we did not know that you were sopost llet it run for 30 min and we thought it was'nt working so we turn it of and then we turn it back on and now we can't get any thing to come up it is just a black scren can you help me with this problem dan byunm

Posted on Mar 13, 2008

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The issue with these types of computers it quite simple. The machines fo no come with enough of room or openings to allow the components to ventilate. I would suggest taking it to a local computer repair shop so that they can modify the case to add in a ventilation fan on the sides of the case. Note they may need to drill out a hole for the necessary fan install. But it may allow you to use the pc without it overheating the system.

Posted on Nov 30, 2007

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Im not a expert but my opinion would be to just buy a new power supply. Installation is easy. Thats one thing that gets replaced most often out of all pc parts. I would wait for a expert opinon though, good luck

Posted on Nov 27, 2007

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