Question Unstable PC since several days, restart leading to different components.

[Natan_2]

Hello,

I will post my full PC specifications first:

- Nvidia RTX 3070 Founders
- Intel Core 12600K (no OC)
- G.Skill Trident 16GB 3400MhZ
- Gigabyte Z690 UD DDR4
- Corsair RM 850X

So, since several days my PC been pretty unstable, and thus - unusable.
For the past 3 days, I think I had as many as 20 BSODS - leading me to software issues (Critical Process Died, Windows files not found), Hardware Issues (Memory Management) etc.
So what I have already done:

- Memtest to check if RAM is fully working (it is, zero errors during test, and also RAM is working in another PC flawlessly - XMP or not)
- CrystalDiskInfo to check on my SSD and HDD - also, nothing to worry, it works just fine.
- BIOS update and downgrade
- CMOS Reset
- GPU change (I've put on a GTX1070Ti in here, still nothing)
- I've checked every RAM Slot with every stick, dual & single channel, still restarts after 15 minutes
- I didn't change the PSU yet, cause I'm worried that 650Watts I have in my old PC won't handle this setup.
- I tested it with RAM from another PC, it still crashes

So, the problem, apart from the restarts, is visible when: You surf on the internet (Opera keeps telling me it has to shut down due to excessive memory usage), applications (like Discord) closes every 5 minutes then auto-restarts, PC frozes when I launch a game, then black screen and restart.

I have there some of the latest BSOD report:

 

[Natan_2]

Like, if this is non-recoverable, I would at least want to know what is failing, and what I have to replace. I don't want to find myself spending money for an component, and later find out that it's something different causing the issue.

 

[Natan_2]

Edit #2: I eventually switched my old PSU (650W) to the new PC - the outcome is still the same, BSODs out of nowhere, although it worked for like 45 minutes.