Then put everything back together and hope for the best. Service Manual Acer Aspire 5520 5220 Series - Free download as PDF File (.pdf), Text File (.txt) or read online. Then give the button cell a few minutes to recover and check its voltage is back up to ~3v. So I'd probably momentarily short the button cell's solder-balls hopefully resetting the BIOS chip to a default workable state.
If voltage seems OK, then I'd also optimistically guess the chip's firmware somehow got corrupted enough to prevent its boot circuitry from being activated. Unfortunately, you must remove the keyboard to check the voltage between its solder-ball connections to the mainboard. The key combo should activate a special boot circuit built into the BIOS chip itself to read and install firmware that's on a bootable stick.Īt this point, since it's not being activated, I'm gonna make a wild optimistic guess that this circuit is still OK. But that the CMOS button cell has shorted or otherwise gone bad rather than the chip circuit itself. >Does the Fn+Esc combination instruct the machine to boot from USB?>
#ACER ASPIRE 5520 ICW50 DRIVERS WINDOWS#
To flash BIOS in Windows mode, please unzip IC50133.ZIP and execute the flash32.exe to flash BIOS. To flash BIOS in DOS mode, please unzip IC50133.ZIP and execute the IC50133.BAT to flash BIOS. There is a readme file that is not very helpful to me, it states the following: The files that I have extracted are:įlash32.exe (I guess this is used if you want to flash the BIOS from within Windows, which I cannot do) I would really appreciate someone helping me with this. I would like to try this - I have downloaded and extracted the correct files from Acer support, but I am not sure which files to copy to a USB drive to flash the machine. I have tried an external monitor with no luck.Īfter googling myself into a near coma it looks like a possible fix would be to flash the BIOS. When I boot the laptop now, the fan and hard drive spin up, but the screen is completely dead. I booted the machine again with a live Linux UB and copied off my data. On restart it wanted to do a system repair, but after a while I just had a blank screen (with a bit of a backlight). When using it yesterday, the machine froze and I had to restart it. I have an Aspire 5520g on Windows 7, used on a daily basis. I cannot find a section for Aspire laptops,so I'm posting this here.
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