Computer will not turn on when cpu is installed

[chapley]

When I turn on my computer I get nothing. No fans no post. I uninstalled everything down to cpu and motherboard and still nothing. My power led indicator on the motherboard is lit telling me power is at least going to the board. After uninstalling the cpu the fans kicked on. I installed my hard drives and could hear them after turning on the power. I've also reinstalled my gpu and its fans will kick on. After checking my pins and reinstalling my cpu I again get nothing. Is there still a chance this could be my board or psu? Or is it safe to assume my cpu is dead?

 

[brispuss]

Make and model of motherboard, CPU and PSU, please?

 

[chapley]

Intel i7 4770k
Asus z87-a
Corsair tx 650w

 

[derek3ton]

Do you have ram installed? You will need that as well to be able to post.

 

[chapley]

I have tried with ram installed, yes. It will start up and fans will run with everything in but cpu. As soon as I install cup I get nothing.

 

[brispuss]

Presumably this is a new computer build?

Is the 8-pin CPU auxiliary power cable connected (properly) to the motherboard? And while you're at it, check that ALL cables are connected properly.

If issues persist, try the CPU in another compatible computer, and/or try another compatible CPU. Borrow CPU/computer from friend, neighbour, or whoever if necessary.

 

[chapley]

Sorry, I built this computer a couple years ago.

All cables were connected properly, I guess all that's left is to try and get ahold of a mobo/cpu to test.

 

[brispuss]

So this i7-4770k CPU is the original CPU when the system was built two years ago? And the system has just recently started playing up, for no apparent reason?

Could try another known working PSU as a test, and/or try the TX 650 W PSU in another computer.