Solved HELP WITH BLANK BLUE SCREEN w/ no text

[funkdoobie]

Hey, I built a computer for the first time and I recently updated my GPU from a Radeon HD 4350 to a Radeon HD 6790. When I played games w/ the Radeon HD 4350, I never got the blank blue screen problem and now that I installed my new GPU, the radeon hd 6790, I start to get it randomly while playing games and even from watching youtube videos. I even replaced my 500w PSU to a 775w PSU, but that didn't help.

I also don't know what type of drivers I need for my graphics card. I just downloaded AMD catalyst driver and a profile from the AMD website

Can someone help me out here please.
I appreciate all the help I can get. Thank you.

SPECS:
-ASUS Sabertooth 990fx (new)(up to date)
-AMD fx-6100 6-core CPU (new)
-A70 Corsair HighPerformance CPU Cooler (new)
-Corsair XMS3 16gb RAM (4x4gb 1333mhz) (new)
-XFX RADEON hd 6790 (new)(using a DVI to VGA adapter by EVGA)
-750gb hard drive (new)
-Thermaltake 775w Powersupply (new)
-Thermaltake full tower case (about 4-5 years old)
-23 inch HP monitor
-Windows 7 Ultimate x64
-Installed once and only once
- age of computer is 1 month

 

[funkdoobie]

also

Also when I turn off my computer over night and turn it on in the morning, I get a blank blue screen in the first 10 minutes I turn it on. Then when I restart it, my computer lasts without a blank blue screen for a couple of hours without watching videos. It won't last if I watch videos.