I got a Acer Aspire One, which came from factory with XP Home installed. At some point, Windows 7 was installed as well, making it dual boot. Windows 7 ran fine, but the laptop was to be sold, therefore i needed to restore to factory settings. This presented a problem, as windows 7 removed the MBR installed by Acer, which is required to boot the PQSERVICE partition from either the Alt-F10 boot method or the Acer Empowering Technology application from XP.
So, what i did was image the PQSERVICE partition to the windows partition, mount the said image, and extract the three files MBR.BIN, RTMBR.BIN, and MBRwrWin.exe to the system partition from the mounted partition image. Then (pretty sure from windows xp) I double clicked MBRwrWin.exe and rebooted. Now, while holding the ALT key while continually tapping F10 while the ACER logo was visible during initial startup, the system will now load the Recovery Utility.
If you got an acer aspire one, aoa-150 with 160GB hard drive, here is a link to the files so you dont need to image the partition: AOA-150 MBR Utility I am not sure if that will work for the 120GB or SSD drives or not, so use it at your own risk.