System posts with one cpu but not the other

[tarkinater]

I bought an i7 which fried, so I went to buy an i5 off CL to replace it. With the i7, my system would post but would give me BSODs when booting.

When I put in the i5, it will not post any more. The debug screen on the mobo shows that it is starting up though. The system worked and booted into the OS with 2 other GPUs that I tried. That led me to believe the GPU was the issue. I tried my GPU in 2 other systems, where it booted immediately. The only time I am getting this issue is with the combination of the i5 and my GPU. Any help would be appreciated. Thank you!

System:
Motherboard: Asus Maximus IV Extreme
CPU: i5 2500K(working) i7 2600(fried)
GPU: PNY gtx 770 2gb
Ram: G Skills Rip Jaws 2x4gb
PSU: Coolmax ZX-600
Hard Drive: Sandisk SSD Plus 250gb

 

[getochkn]

Does it work without your GPU and the onboard?

And maybe the i7 fried and this setup is having issues because of your kinda crappy PSU. A good PSU is the best foundation for any PC and yours is not.

 

[tarkinater]

My mobo doesn't have onboard. The cpu fried because I didn't have a cpu fan when I was doing a quick test(I know, it was stupid). If it was the psu, it wouldn't work with the i5 though. And I have had my psu tested in the store