Question PC only turns on after I turn off and on the PSU

[Sn0r3laX]

The title says everything. The light MB lights are on, and it clearly has power. But when I try to start it, it does nothing, only after I restart the PSU. It's been like this for 2 months, before that everything was fine. I'm assuming that my PSU is failing, but I don't know it for sure. I've tried contacting Thermaltake already, but they wouldn't respond so I just gave up with them.

Specs:

MB: ROG B650E-E Gaming
RAM: Kingston Fury Beast 6000Mhz
GPU: Nitro+ RX 7900XTX
CPU: Ryzen 7 7800X3D
PSU: Thermaltake Toughpower 1250W IRGB Plus

 

[Ralston18]

How do you normally shut down the computer?

Do you use the Windows power icon to shutdown? There should be no need to actually physically touch the PSU's power swithch other than as a last resort.

Hard power off's will corrupt files and create more problems.

Look in Reliability History/Monitor for any error codes, warnings, or informational events being captured just before the times when you need to turn the PSU off and on.

Run "dism" and "sfc /scannow" to find and fix corrupted files.

 

[Sn0r3laX]

I use the windows power icon when I'm turning off the PC.

My problem is not related to windows. As I mentioned, my PC wouldn't start, unless I turn off and on the PSU before pressing the power button on the front of the PC. After that it boots fine into windows.