If you are one of those, like me, that picked up one of these recently, reading this could save you a lot of worry and money too. If the same happens to you at least you'll know what to do. Last week while away on a business trip my AA1 died on me. Turning on just gave me a power light and whirring fan but blank screen and no boot. I ran it into a PC repairer who said a power surge had probably caused the motherboard to go and said it would be £150 - £200 to repair. I immediately thought the high power Chinese battery or RAM chip I installed had caused it but decided to wait till I got home to do anything. It seems this is a common fault and costs nothing to sort. You need to do a BIOS recovery which takes about 2 minutes and this is how to do it:
The AA1 has a built-in BIOS recovery routine, making it possible to flash the BIOS even if the system doesn't boot anymore. It's only meant for emergencies and may void your warranty, so use at your own risk.
Follow every step carefully!
First format an USB stick with FAT.
Download the latest BIOS, and put both FLASHIT.EXE and the BIOS file in the root directory of the stick. Rename the BIOS file to ZG5IA32.FD, that's important. Do not remove the USB stick.
Turn the AA1 off, make sure both battery and AC adapter are connected. Press Fn+Esc, keep it pressed and press the power button to turn the AA1 on. Release Fn+Esc after a few seconds, the power button will be blinking. Press the power button once. The AA1 will now initiate the BIOS flash, do not interrupt it under any circumstances. After a while the power button will stop blinking, and the AA1 will reboot shortly after. Wait patiently.
The BIOS has been flashed and all settings reset to default.
If for some reason you made a mistake during the procedure and it doesn't reboot by itself wait 5 minutes before turning it off, just to be safe that it isn't still flashing the BIOS.