Windows 7 driver help pls><

hi guys..I have been using windows 7 for quite sometimes..
recently i was installing a driver for my ps3 controller*it failed*
But because i didnt restart my computer for days/weeks the problem didnt came up.
Yesterday i shuted down my pc and today when i switch it on..

ALL of my driver seems to be missing..
mouse,Ethernet,Sound driver..and it seems like all of my usb graphic drivers all are having errors..

Im not sure what to do now..Can anyone give me a hand please?thank you.=)

Oh ya.normally when we re-plug any devices..i would auto scan for the drivers..But now it doesnt seems to do that anymore..
BTW my keyboard is still working..Im currently using windows xp as my mouse cant work in windows 7..
And my keyboard doesnt uses usb ports.