Blue screen after installing new GeForce 8800 GTS

[Hondaman]

Hi,
I recentaly installed my new GeForce 8800 GTS 512MB.
When i play games it crashes & gives me Blue screen.
Why is this happening? is it because i havent desabled the onboard graphics?

[ManKal]

Let me ask you first did you uninstalled the driver for onboard graphics?
It is must to uninstall it before installing your video card.

[Hondaman]

I don't remember that i uninstalled the onboard graphic.
So what can i do now?

[ManKal]

First uninstall the onboard graphics
then uninstall the video card & install it again.