Hi,
i had the same issue with bricking my Acer 5741G (x64 arch.). Something went wrong during installation from Windows 7, thus i had terrible experience looking for a solution. Non of posts in this forum helped, but after spending ~4 hours investigating and searching for a solution i found a reply in some another forum (somewhere in mydigitallife.info forums) about Acer 5741G and BIOS problem.
The solution was such:
1. Download latest (of earlier if latest BIOS version doesn't work) BIOS version for your laptop from ACER support portal (i've used worldwide portal)
2. Find file *.fd in DOS directory
3. Rename file name to NEW70X64.fd and copy it to USB or CD/DVD (only one file should be in the media)
4. Remove battery and power cord from laptop, press and hold FN+ESC, plug in power cord and press power button still holdin FN+ESC keys (for a few seconds).
The trick i missed everywhere else was to rename file name to NEW70X64.fd. It worked for me as after few minutes bricked BIOS was replaced with NEW70X64.fd and i had BIOS unbricked and working perfectly.
NB Use this tip for your own risk, it might work only for x64 architecture as file name has "X64" string in it.
