Hardware Acceleration Problem.

When I startup Windows Vista (Ultimate), I get a blue screen which dissapears
so fast that I can't even read the first word of it. When I startup Windows
in safe mode (I guess it's 'safe mode' in English, I´ve got the Dutch
version) I get a message of the 'problem-solving-service' which sais the
problem will be fixed when disabling Hardware Acceleration. But when I try
so, I get a message that the changes in Hardware Acceleration can't be made
in the register. Please help me!

Asus K8N4-E Motherboard
AMD Sempron 3000+ Processor
Nvidia GeForce 7600GS Videocard
Windows Vista Ultimate (Dutch)