If the install hangs at completeing installation then how were you able to get into Device Manager to change drivers causing instability. We can't give you help when you don't even spell out exactly what is going wrong.
If you have an install that destabilized by changing drivers then roll back the drivers or System Restore to before the changes.
If you are still trying to install, wipe the HD first using Diskpart as XP doesn't use the same partition table: SSD / HDD : Optimize for Windows Reinstallation
Unplug all other HD's and USB devices.
System hangs at Completing Installation are often because of video card or other driver loading. Can you default to onboard video by disabling card in BIOS, or try another card?