Upgraded GPU, having problems now.

iiizzy

Honorable
Aug 25, 2013
4
0
10,510
Hello, I had a question about this graphics card I just installed. So, I had a Radeon 7450 that was installed with the computer I purchased, that wasn't cutting it on games like BF3 or Dead Space 3, so I bought a Radeon 7750 and a 520 watt power supply. So, I took out the radeon 7450 and put in the 7750, and took out the old power supply for the new one, and I installed it. Afterwards, I was playing league of legends, my monitor suddenly went black for a second, froze for a second, and came back saying "auto config." So, this happens atleast 4-5 times a game and it is REALLY annoying, it's very gamebreaking and I am very lost on what to do. Also, the screen flashes white once in a while, and it can hurt my eyes. Can anyone help me on what to do? Please it would be GREATLY appreciated. Also, sometimes, once in a while my screen just goes in like a striped colour form in a line going left to right all the way from the top to bottom, and I can still hear my friends on skype but I cant see anything, forcing me to close the computer with the power button.