Question PC fails to start, just pulses

Oct 5, 2022
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Hi Everyone
For the last few weeks I‘ve had trouble starting my PC. It pretty much pulsed every time i wanted to power on, but shut right off again. After a little fidgeting (sometimes adjusting the RAM sticks, sometimes the PSU main cable, CPU fan cable etc.) it would always start after a few tries. Never seemed to be the same problem every time though, if one day it was unplugging the CPU fan and plugging it back in, next day the solution was sure to be different. However today, nothing works. It pulses, doesn‘t start, no matter what I try.
I have read online a ton and can‘t seem to find the proper solution. Apparently all things point to Motherboard/PSU, but I don‘t have a different motherboard to test and I‘m pretty sure its not the PSU.

Whats more, the entire build is roughly half a year old, so nowhere near justifiable to just go out and buy a new motherboard and hope. Thank you in advance.

Specs:
Motherboard: MSI MPG B550 GAMING EDGE WIFI
CPU: AMD Ryzen 5 5600X (AM4, 3.70 GHz, 6 -Core
PSU: Corsair RM1000x
GPU: Gigabyte GeForce RTX 2060 D6 - 6GB
RAM: Corsair Vengeance RGB Pro (2 x 8GB, DDR4-3200, DIMM 288 pin

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