I recently got some malware that I deleted with Antimalware Malwarebytes but it ended it up messing with the atapi files. I can no longer boot into Windows and always get BSOD. I looked up some solutions and tried replacing the .sys and .reg files with a UBCD4Win LiveCD but it didn't work. I also tried system recovery/repair with a Windows XP cd but it doesn't work because it says it can't detect a hard disk drive. However ,if I keep the usb drive filled with the correct .reg and .sys files plugged in, the Windows set up loads up but it goes straight to the install/partition page and skips over the "choosing to install or repair Windows" page. Any help would be appreciated.