Question Problem with Erying Motherboard kit, pc keeps restarting in loop.

[OverclockVintage]

I had this pc that was using this Erying engineering sample kit(mobo with soldered notebook cpu).
I went to remove the NVME to add a heatsink on it without proper waiting for it to de-energize and when i turned the pc back on the network was not working and then i removed and reinserted the nvme and everything came back to normal, i went to change some other component that i don't remember witch and the pc began to show a problem of restarting in loop and after sometime of insisting in turning it on it screwed my HardDrive unit permanently.
I still have that kit laying around, what could have generated this problem?

That computer specs were:

ERYING i7 11600H, CPU 11-Core 0000 ES
Ram: 2x Atermiter 16gb 3200mhz 1.2v
Gpu: Zotac 2060super
3nvmes (chinese ones) with one in the pcix1slot using pcix1adapter cut down from a 4x adapter.
2HardDrives one 1tbSeagate and the other a 1tbSamsung.
Power supply: a cheap quite new Gigabyte P550B

Obs: The power supply i used on another computer that is still working fine with no problems with it(though i want to exchange that psu for a better one).

 

[Lutfij]

Power supply: a cheap quite new Gigabyte P550B
This might be the root of your problems actually. Source(borrow, not buy) a reliably built 650W PSU and then see if the issue persists.

 

[OverclockVintage]

Power supply: a cheap quite new Gigabyte P550B
This might be the root of your problems actually. Source(borrow, not buy) a reliably built 650W PSU and then see if the issue persists.

Do you think even if it is working 100% fine on another computer?

 

[OverclockVintage]

One important information: The restart loop was what damaged the hard drive , because of the computer restarting itself multiple times: "abrupt power loss during spin-up or spin-down can physically damage the drive, leading to permanent failure"(quoted from ChatGPT).