Comp wont start up

I read your description carefully, there is no dought in my mind that the motherboard is the issue,acer is well known for problems in that area and unfortuneately there is nothing more you can do, generally I find they get to hot, cooling fans fail, and numerous other situations.

Look in your bios for your hard drive. Is it showing up?

If you do have the devices displayed on screen when you start it ..before getting to windows screen ..and this blank screen only gets after ..It may be a windows error ...and reinstalling it or running the recovery partition will fix this ..It may be related with the updates for video card ..made auto ..and installed a wrong driver or setting ..(unsupported ) ..If this is the case try to turn it off by unplugging ..and will give you the boot mode screen ..where you should load safe mode..If you manage to load it in safe mode just reinstall the video driver for it and it may work ..
Another case it may be a damaged display screen or damaged wiring or the inverter for it ..(in this case you should check and see what s wrong and change the inverter if it is the case..Basically you will have just shadows on screen and miss the back light )..
anyway ..try to see if it starts to bios at least ..and if it does..it is just a corrupted windows and need to be reinstalled from scratch and will work ..
If it does not load windows either bios settings ..but still opens and looks blank ..(this I assume it does not mean it do not open ..but opens and shows an empty screen ) You may see the cause for not loading BIOS ...the cmos may be damaged or the battery for it empty ..and you will need to reinstall Bios ..
Usually if it is a damaged video card will not open at all and make some beeps noises ..so this may be excluded..So ..it is either the operating system ..or the wrong driver for video ..(and wrong ..unsupported setting ..and in this case will even load windows but you can not see it pass the windows logo ..and you should hear the log in ..
Or it may be something wrong with the ram memory and in this case is explainable if it does not load bios settings ..To see about this..just open the back lid for ram memory ..and remove them ..and place them back one by one ..and try to boot up each time ..If it shows devices and loads at least bios ..with one ..it means it works ..check them all and eliminate the faulty ones..Try several times to press them in the slot ..cause sometimes just do not make a good contact and nothing wrong with the modules physically .

The little "stack of CD's" is a hard disk activity light.
In an ACER, if it blinks on boot, you may need to pop the PC open and bridge the BIOS jumper to reset the BIOS... Not fun nor easy, but possible.

Because you didn't state you added RAM, changed a BIOS setting, etc, we'll continue as a regular user:

First to check:
When you power on, do you get a BIOS screen? Meaning quick text showing pc info, RAM, or a splash screen (picture) saying the manufacturer, HP, Acer, ASUS, Toshiba, etc... Can you tap F2 (Acer), F10 (HP/Compaq) and enter the BIOS?

If NO,
your motherboard may be to blame, the timing of the flashing lights indicating an error, or your hard disk has died and a poor BIOS could not translate that error to the user in text format.

If YES,
Does it continue on to show a Microsoft Windows Logo, or logo depecting your operating system (os), Ubuntu, Xandros, etc?

If NO: your hard disk may be failing, physically loose, completely dead, OR your os may be corrupted. You can unplug it, pull the battery, hold power on for 10 sec, flip it over, unscrew the hard drive cover, re-seat the hard disk (pull it out, put it back). Repeat for the RAM. Add the battery, plug it in and retry.

If YES,
And the pc starts loading Windows, Ubuntu, etc, but HANGS with the hard drive light flashing, you may have a simple driver conflict issue. You can try repeatedly tapping F8 while booting and select "last known good configuration" (windows only). It may help, or you may need help.

:) Sorry!

I would suggest you pull out your ram, hdd and dvd. Then put them back in with ram first. You should then find out if any of the devices you have taken out might have caused the fault.

CPU overheat with BIOS version 1.19
Try new ver. 1.25 published on 1/11//2010.

Did you try the FN+screen switch key. maybe check to see if nothing is loose ( hdd, ram ) also the bios to see if screen settings are correct

when you replaced the internal battery you also reset the cmos adjustments,500 mb ram ? 526 maybe, not alot but won't affect startup,start from scratch,disconnect anything not associated w/start up cd drive,omit video card.and plug monitor into mobo (if there is a d-sub).You need to get to your bio's,restart comp while depressing delete.when bios shows up reload default settings.and start up.you can't resolve this without getting into bio's good luck

Hi, Does it start to boot from windows and then shut off or is it before windows? Try removing the HDD and see if it will still shut down. If it does not shut then with the HDD removed, then the OS on the HDD is corrupted. Thanks, Mike

I have the same problem, the CPU fan spins, keyboard lights blink, no start up screen, or bios.
But, when I push a few times on the pc reset button, then the CPU fan is becoming still, the keyboard light are out and I can start the computer again in a normal way.
Can this one be a temporally solution for you too? Do you have any suggestion about?
I guess it can be an electricity dysfunction of a wrong fixed cable.