The Acer Aspire One has its own built-in BIOS recovery routine, allowing it possible to flash the BIOS even when the system doesn’t boot anymore. It’s feature meant only for emergencies it may void your warranty, so use at your own risk.

Execute every step carefully!

Step 1 :

Format an USB stick with FAT file system.

Step 2 :

Download the latest Aspire one BIOS, then put both Bios and the FLASHIT.EXE software file in the root directory of the USB stick.

Step 3 :

Important, rename the BIOS file to ZG5IA32.FD and do not remove the USB stick.

This tutorial can also help to do it on other computer brands

Disclaimer : First of all you must be aware that some of the operations to come can cause irreversible change on your hard disk, I recommend to you and I will never make it enough make a backup of your system before launching you in any hazardous operation. Any damage and/or modification done on your system will be under your whole responsibility. The following procedures were done on a Acer Aspire 5102wlmi and some also functioned on a Dell Inspiron 9400/1705.