I'm a tech. I was instructed to wipe Vista Basic from a friend's brand new Acer Extensa 5210 and install XP Pro. I told him that his warranty might fall over but he insisted. So I wiped his hard drive (80gb SATA) and started to install XP Pro. I installed the correct SATA controller drivers from a USB floppy drive (there's no inbuilt floppy drive in the Acer) and all seemed to go well. But after Windows finished copying files and I hit Enter (following the prompt "Hit Enter to start installing Windows"), the next screen said something like "...can't find any hard drives, hit F3 to abort". The Acer site where I found the XP drivers is here:I notice that the site provides an XP BIOS (1.02) whereas the native BIOS loaded in the laptop is for Vista, 1.07. Perhaps the problem might go away if I installed the XP BIOS? Anyone able to advise on this?