PC crashed and now won't post, no fans, no beeps

[Sly.sh]

Hey Everyone,

 

So today one of my case fans was being a bit noisy (which it does sometimes) so I knocked the case gently to stop it from rattling, except my pc crashed and since crashing won't post.

When I press the power button absolutely nothing happens. No fans, no beeps, no indicator LEDs on the mobo.

 

My Configuration:

- Ryzen 5 5600x

- Corsair RM650

- 2x Corsair vengence DDR4 8GB

- ASUS Gtx 1060 6GB

- 1TB 970 EVO M.2 SSD

- B450 Tomahawk MAX

 

Things worth noting but have no idea if they are relevant:

- I recently upgraded to windows 11, enabling secure boot etc in bios

- I can see a power indicator LED on my GPU

- Since upgrading to windows 11 my PC wouldn't always boot first try and would post but wouldnt load into windows. However restarting it would always make it work second go.

 

What I have tried so far:

- Unplugging all back IO

- Using a screwdriver to jump the power switch pins

- Re-seating RAM, 1 Stick, both sticks, different slots.

- Re-seating CPU (and therefore the cpu fan), checking the pins and socket for debris.

- PSU Paperclip test. (The PSU worked, fan was spinning)

- Re-plugging power cables

- Removing GPU. then reseating also.

- Resetting CMOS (remove battery and unplug power cable then hold power button for 30+ seconds)

- Unplugging my front IO and fan controller (from the case)

 

UPDATE:
Still not working, however I have found that if I remove the cpu and then try to power on the machine my motherboard lights and psu fan turn on.
I am now wondering if my CPU is kaput

What could be causing this other than a dead CPU?

 

UPDATE 2:
I have ordered a new MOBO and CPU.
I am going to try the new MOBO first, then new CPU and send back whatever I don't end up needing.

 

Any ideas would be greatly helpful, thanks!

[Retro]

attempt turning on the computer with no fans connected (and no fan controller), including CPU fan.

[Sly.sh]

10 minutes ago, Retro said:

attempt turning on the computer with no fans connected (and no fan controller), including CPU fan.

Thanks for the suggestion. I unplugged all fans + controller, including CPU fan and tried.
It did not work unfortunately.

[Sly.sh]

New motherboard fixed it! What a pain. So glad it wasn't the CPU though.
(Also worth noting that my pc has been booting first time every time since the new mobo so that must have been what was causing that issue also)