No display, No beeps, no power to Mouse & keyboard after New cpu cooler installion

Michael4c

Commendable
May 11, 2016
53
0
1,640
My pc wont display anything to the monitor. fans LEDs etc turn on inside of my pc but my mouse & keyboard wont light up.(my pc was working 100% fine before i installed and clean the motherboard) There was no beeps i read the motherboard manual and the speaker was in the right place and no beeps

I took out the motherboard to clean it off and put in the new cpu cooler after i put it back in and hook everything back up and the problem begins. So i resetted everything. that didnt work so i try different parts same problem so i slowy took everything out and there was just the motherboard and cpu and it still would not display anything.
I tried to clear and reset the bios cmos. I also got a light and look over the whole motherboard no burn marks no damage what i can see

My pc specs
CPU: i7-2700k
GPU: Nivida Evga gtx 750 ti
Motherboard; z77a-g41
Ram: 2x4gb of ram
2 HDD of 500mb

If you need any more info ask me
 
Solution
Make sure the CPU 12V cable is correctly connected and that the DIMMs are fully seated, you may have nudged one of them loose while removing the previous HSF or installing the new one. Common mistakes. If the HSF you installed has a CPU socket backplate, some board and plate combinations have clearance issues, perhaps something is getting shorted on the back of the board. For HSF which have no definitive stop to how much you can clamp them down, over-tightening and breaking something is also a possibility.

InvalidError

Titan
Moderator
Make sure the CPU 12V cable is correctly connected and that the DIMMs are fully seated, you may have nudged one of them loose while removing the previous HSF or installing the new one. Common mistakes. If the HSF you installed has a CPU socket backplate, some board and plate combinations have clearance issues, perhaps something is getting shorted on the back of the board. For HSF which have no definitive stop to how much you can clamp them down, over-tightening and breaking something is also a possibility.
 
Solution

Michael4c

Commendable
May 11, 2016
53
0
1,640


It was the backplate. Do you know any fan cpu cooler for my motherboard?