With Acer's I've just been informed that you will need to FLASH the BIOS. It's a relatively simple process... Things you need:
1. Alternate Computer with Internet Access
2. Empty Flash Drive
3. Patience (haha)
unplug the Acer, take the battery out and do the 30 second hold...
Get on the other computer and go to Acer's website, find the BIOS download and save it to the desktop of the current computer. Plug your empty flash drive in and open it. Locate the folder for the Acer BIOS and find the DOS Flash Folder. Open it and rename the file inside from 3310.fd (example) to zg5ia32.fd and then copy it and the FLASH(IT).exe file to the empty flash drive. (I had to put the parenthesis in there cause it thought there was a bad word!! LOL)
Unplug the flash drive from the working computer and plug it into the non-working Acer laptop. Leave the battery out and plug in the AC Adapter. You will now press and hold the ESC and FN keys at the same time while turning on the computer. Continue holding the ESC and FN keys for about 5 seconds and then let go.
Here's where the patience comes in... it will look like nothing's happening... it may continue to look like nothing's happening for up to 7 minutes. The computer will restart once this process is complete, and your computer should work again!! If it doesn't I've been told you can try repeating the process a couple of times, but if it still doesn't work you may need to call Tech Support...
It worked for me and was wonnnnnnnnnnnnnderful!!!