System crashes, freezes and locks up!!!

i have a P3 800MHz 133, QDI Advance9 MotherBoard, 128MB 133 , Creative GeForce2 GTS
When systems boots it has a habit of locking up and Explorer not responding, rebooting was the only answer!!, OpenGL Setup will not instal,l Saying (UNKNOWN DISPLAY DEVICE ) and OpenGL is not on OpenGL setup for my Display Device, all games lock up , Deus Dx, Unreal Tournament, Startrek Elite Force, all lock up at random with the only option to reset!
Im using Detanator 3 Drivers for my GeForce2 - ‘PLEASE HELP’


Wrong place to post - this is a coding forum. You want the end-user forum at the top.