To disable Driver Verifier and go back to normal settings, open the Driver Verifier application again, select “Delete Existing Settings,” click “Finish,” and reboot your PC. If your computer crashes every time it boots and you can’t disable Driver Verifier, try booting into Safe Mode, launching Driver Verifier, and telling it to delete existing settings. You should then be able to boot your PC normally.
If this doesn’t work, you may be forced to boot from a Windows installation disc or recovery drive. From here, you can restore to a previous System Restore point or repair your system.