I think Jo*Mar's suggestion of using the System Restore might solve your problem. If you have never used it before, you will wonder how you ever lived without it.
I think you are using Windows XP. If so, here are the steps:
- Click Start
- Choose Help and Support (on right)
- Choose "Undo changes to your computer with System Restore"
- Select "Restore my computer to an earlier time", Click Next
- You should now see a window with 2 boxes: a calendar on the left and a box on the right with today's date. The dates in bold on the calendar have Restore Points. Generally your computer will automatically set a restore point every day. (It will also set a Restore Point before some software installations.)
- Think back to the first time the message popped up, and click on a date a couple of days before (make sure it is bold).
- In the box on the right you should now see a "System Checkpoint" highlighted.
- Click Next. Your computer will start the Restore process. This will take a long time, and it will reboot. After the reboot, don't be alarmed if it takes longer to start-up than normal. This is part of the Restore process.
Hopefully that will take your computer back to a date the driver was still properly installed.
Hint: Before installing new software, I always set a Restore Point. That way, if there is a problem with the software, I can restore the computer to the point before the new software installed. You would do this at Step 3, by choosing "Create a Restore Point"