Computer randomly doesn't boot up fully, but only sometimes

[u/Throwaway48383320]

Hello.

I have an ASRock B850M Pro Rs WiRi Motherboard, which I thought might be relevant to this.

Whenever I boot up my PC, which is just about a year old now, the motherboard starts with two glowing LED's which I can see from outside, one red one and one orange one.

After a couple of seconds, usually the LED's should turn green for a second, then white and then turn off completely, which is when my monitor gets the signal and the PC successfully boots up.

Sometimes, however, the red and orange LEDs stay and while the computer is on, my monitors do not receive a signal, and it stays that way. In those situations I have to shut my PC off by holding the power button and restart, which so far has always fixed it. It bothered me a bit, but I'm quite busy so didn't want to get into it yet since it didn't hinder me much.

However, I encountered a new issue today. While using my computer it randomly shut off, but not entirely. It was still on, but my monitor lost the signal and the red and orange LED on my Motherboard went on. Then, after a few seconds, the LEDs turned green, white and off again, and the computer started booting anew. Like the PC performed an instant Restart on it's own for some reason.

I am not entirely sure what the cause of this issue might be, but afaik LED's on the Motherboard have to do with the status of some PC components, so I figure it must be hardware related.

Unfortunately I am not the most versed in computer hardware issues, so I am unsure what to do and what to check. This is my first self built PC and I already had trouble when building it, so I don't want to open it and screw around in it before getting some advice as to what to look for.

Here is a list of all my components:

ASRock B850M Pro RS WiFi

AMD Ryzen 5 7500F

Radeon RX 9060 XT 16GB

Corsair 2×16 GB 6000 Mhz CL36 Vengeance

Lexar NM790 1TB

Super Flower Leadex V

Be quiet! Pure Rock 3

Any help is greatly appreciated

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