My system had a BSOD after I update to AMD's version 13 drivers. To revert, your best bet is probably a system restore to the earliest date right before you updated. System restore doesn't delete any files but it will revert programs and settings (registry).
To do this, when booting your computer, mash the F8 key until you get advanced boot options. Select "Safe Mode". Run system restore once the computer boots and choose the date of the closest system restore that was BEFORE your driver update.
---
class EOSERV {
Programmer | Oldbie
Open source EO Client: https://github.com/ethanmoffat/EndlessClient
};