At this point, the only thing I can think of is software. You might want to try a clean install of windows.

Your power supply should be enough to at least get it to post, but it MIGHT crash under any sort of load. How long are you usually waiting for your system to post before trying to reset CMOS again? DDR5 systems are notorious for taking extremely long to post, especially the first time. Often times it will restart at least once on its own as it is trying to train memory.

Run DDU and reinstall drivers. Always good practice when installing a new GPU.

Can you confirm 100% that your AIO is functioning properly?

11900k meaning you purchased your computer a little less than 3 years ago, likely a little more than 2, correct? This unfortunately could mean that your AIO has died.

Download any temperature monitoring software like HWMonitor, HWInfo, etc. Then run some sort of stress test like Cinebench or whatever. Something to put a load on your CPU. Watch the temps. If it’s hitting like 80-90C, but not any higher, then at least you can rule this out. If it’s getting anywhere close to 100C or above, then you have a cooling issue. You can also feel the pipes on your AIO and see if you feel water pumping through it and if one pipe feels significantly warmer than the other.

Most common thing to go wrong when moving a computer is RAM or GPU getting dislodged. Try unmounting and remounting those components. Computer components aren’t as delicate as you might want to believe.

Other thing that could have gone wrong is that you’re booting off a HDD. Moving a computer with an HDD could potentially be catastrophic. Would make sense that it boots up for a second, then fails if this is the case. Can you confirm any of this information?

https://www.asrock.com/mb/Intel/Z690%20Pro%20RS/index.asp#Memory

check this to see if your RAM’s EXACT model number appears in this list. If it does not, you will have to manually adjust your RAM to get it to work. I would suggest trying to either lower your RAM speed one notch or adjust your RAM voltage. I recommend the first because 3000 vs 3200 isn’t significant and if you can be stable without touching voltage, it is usually a safer bet.

Show a screenshot of whatever it is that you’re using that shows this data

Most likely a driver issue. Download DDU and latest drivers for your GPU, boot into safe mode, run DDU, restart your PC, and then reinstall drivers. Should do the trick.

One 50 cal shot could get rid of your desk AND cat entirely and then you wouldn’t have this problem at all though… Problem solved?

Just buy whatever you can find that is listed to be the correct cable. I think trying to get the OEM part is going to be near impossible or it’s going to cost you more than the new battery.