Random no signal.

gevinn

Honorable
Oct 31, 2013
18
0
10,510
Today I bought a Codegen 600W PSU (this one http://www.upload.ee/image/3687302/IMAG0139.jpg)
After installing it, I ran the computer and everything seemed normal.
But after a couple of minutes, the monitor turned off and had no signal.
I shut down the computer and tried again - the same.
After switching the monitor adapter from my GT 620 to the integrated graphics, there was no problem. What could be causing it and can I fix it?

My computer:
Intel Core i3-2120 @3.30GHz (2 cores, 4 threads)
nVidia GeForce GT620
4 GB of DDR3 RAM
2 HDDs
DVD-RW drive
 

gevinn

Honorable
Oct 31, 2013
18
0
10,510
If I even disable the graphics card, everything works perfectly.
This has not happened before the upgrade - what's the problem?