Yet another "fix" for this problem. Many fixes out there, none of them worked for me. Found out what my fix was, undoing another tweak!
If you have an undersized cpu(Duron 800) for running Geforce4 like me, it might do the trick for you too.
Right click on "My Computer" and choose Properties.
Choose Advanced, choose Settings under Performance.
Choose Advanced again.
There, change back to Programs incase you have it set for Background services and Systemcache.