Black Screen with moving cursor when i enable SLI

vmiramontes84

Honorable
Oct 29, 2013
4
0
10,510
I have two gts250's that I am trying to SLI. Independently they both work but when i enable them at the same time I have to reboot and after the windows logo its just a black screen with a movable cursor. I just bought a new 600w psu. I'm running a fresh install if Windows 7 and updated my bios to the most current. I've also tried about 15 different drivers for the video cards. Any ideas?