First off,
welcome to DriverHeaven! Bravo
two things I can think of to try:
1. try updating the drivers via the device manager and update driver. select to manually show windows where your new driver is. if that error comes up point it to the folder that your drivers extracted to (usually c:/nvidia I think.. then the sub folder or file in there it is looking for). if that doesn't cut it try,
2. drumroll..... DriverCleaner. the link to it is on the front page of DH here on the left. there is a readme file inside on how to use it.
Good Luck Bravo!