Getting nothing to my Monitor?

jRoK

Reputable
Dec 26, 2014
26
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4,530
So I just upgraded to a GTX 750 Ti and a new Corsair CX750M but now I get nothing to my Monitor at all, Only connector I believe I did not plug in was a "P7" Which I read was for a Floppy drive? Which I do not need. My GPU , CPU. And PSU fan all are running and I can hear my HDD kick in when I turn the PC on. But I get nothing to my Monitor. Any ideas would be helpful.
 
Yes it was connected both the 6 pin connector and the Dvi cable I took out the gpu and connected to on board video port and still got nothing to the monitor?
 
Ok so fixed the power problems my pc is on and running fine except It is flashing flickers on then off on then off over and over I can see my desktop move my mouse and see it in a new place between blinks so any ideas?