Black screen after windows loads

Beaube

Honorable
Mar 5, 2013
4
0
10,510
I know what lead to this problem but dont know how to fix it. I just finished building a new gaming rig last night. Had it hooked up to my 60in plasma, and the gpu @ 1080p wasnt atreched to all 4 corners. So i went into ati catylist control and click gpu render or something along those lines, in the display/monitor setting. screen went black, i thought ok just wait it will revert back automatically. Wrong! Well how can i uncheck that box? Or reset it.

My setup:
Asus Sabertooth 990fx r2.0
Amd Fx 8350
G.skill ripjaw x 1866 ddr3
Gigabyte hd 5770
Roseline tachyon 750w psu