My friends little Asus Q200e that came up with an error BAD POOL HEADER, I pulled the hdd out since repair, revert didn't work at all even with a bootable thumb drive with win 8. I ran disk check from my desktop to find no errors but everything on the hdd was corrupted. I wiped the hdd clean reinstalled it to the laptop and now get the error PFN_LIST_CORRUPT error when I try to install Win 8 again. If I don't have a bootable thumb drive in it goes straight to bios. At this point I'm at a total loss, so any help is greatly appreciated!