Is my mobo dead?

[Limecat86]

Last sunday I installed a new D5 pump in my system. Everthing was fine after that. System booted up and was working properly.

So I shutdown my system and attached it back on my TV to start playing Fallout 4 in big picture mode.

 

Well, that ended in a great disappointment. My system won't power up anymore. No lights, no beeps, nothing...

 

So tried the following to power on my mobo:

1. Jumped the green and black wire on the PSU's ATX header. PSU turns on.

2. Tried another ATX cable. Nothing

3. Removed GPU and try again to power on. Nothing

4. Removed one RAM stick and try agian until all RAM removed. Nothing

5. Removed the CPU. Nothing

6. Removed all cables from the board except the ATX header and the CPU header. Nothing

7. Only with the ATX header. Nothing

8. Again tried with another ATX header. Nothing

 

Obviously I left the front panel powerbutton header in the mobo in all these steps. I also tried switching it with the reset button just to be sure

 

I'm really out of ideas how to troubleshoot this even further. It's to bad I don't have a spare PSU to test if my current one is the culprit.

 

I hope you guys can help me further.

 

Specs are in my signature. Sorry for any bad English.

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Try plugging the reset switch into the power header. Also make sure your system is plugged directly into the wall socket.

Oops looks like you've tried that. Can't see half the page on my phone.

[Limecat86]

Try plugging the reset switch into the power header. Also make sure your system is plugged directly into the wall socket.

Oops looks like you've tried that. Can't see half the page on my phone.

Yeah I tried that. I just realized I didn't try removing the CMOS battery.

[Ivelin__]

It may be CPU, try with a box cooler, my P67 Extreme4 didn't spin the fan properly with a dead CPU(1 circle, stop, 100%)