Drivers not found each time i boot UP!! help!

This is so annoying. I have a G4 ti4200 @300/500 and ill load the new detonator 40's on it (have tried older ones too) and everything will be ok, but when i turn off my computer and turn it back on it returns to 640by800 and has no drivers installed.... This is so annoying and i have to eighter leave my computer on (loud) or load the drivers each time which is a pain in the ***. Thanks

dan

I had a similer problem with a GF4 Ti4600, I ended up just have to format, I think there were problems with the registry to do with the detinators, so yeah a fresh format is alwys good unless you have lots of important stuff.......