xps1530M - nvidia geforce 8600m gt - windows 7 32bit Ultimate

Hi folk !! I need help !!

Recently i installed in my xps 1530m the windows 7 32bits ultimate and more i update my BIOS to version A12 and the drivers of my nvidia geforce 8600m gt to version 260.99 WHQL, but the problem is that windows 7 show the maxim resolution of 640x480 and 16 colors. In the administration of dipositives show a error in the driver of my nvidia geforce 8600M gt. And more when i turn on my PC the screen of bios show the colors red and green.

Any Idea?

Sorry for my english, i am Spanish