Question PC is randomly freezing, rebooting, or monitors lose signal which forces me to restart ?

[nostall]

Let me throw out a couple ideas. Borrow a known good working video card similar to your 3070 - just about anything in that 3xxx range, or even a 2xxx or 10xx and see if using that card solves or helps with the problem. That nv----- error code points to the drivers, but the card might actually be dying. Some of the other info. you posted also suggests this.
Secondly: having gone through a similar problem about a year ago, borrow a known good working power supply and run that for a few days.
I offer these suggestions as a little over a year ago I spent a couple months trying to track down the same type problem, only to find that my PSU had finally reached the end of life and replacing it solved the problems. The PSU failing had also caused some corruption in one of my games and a couple programs.

 

[chocopasta]

After you updated the bios, did you clear CMOS (CLRTC) on your mobo? If not you must do this.

You should do it manually by shorting 2 pins marked CLRTC on the bottom edge of your mobo.

Turn off the PC.
Disconnect all cables.
Press the power button a few times to clear the power from the circuitry.
Take out the CMOS battery.
Short the 2 pins (you can do this with a flathead screwdriver) - You touch the head of the screwdriver to the 2 pins. Simply touch them. You can do this a couple of times.
Put CMOS battery back in.
Reconnect external cables.
Power on System.

Once you've done that, you will be presented with a screen that looks different from the norm. It will prompt you to reconfigure the bios, which you can go ahead with, then save and exit and boot up.

Let us know how that goes.

Hello, apologies for the late reply. I was a few days away from home so was not able to try this. I have tried it right now and after quite a bit of struggle and stress, it sadly did not fix the issue.

Something I did notice however, is tiny bits of electricity when I try to plug in an HDMI cable into my GPU. I saw these before trying to do the whole pin grounding as suggested by you, so this is not a result of that, and was also not fixed by doing that as it happened both before and after. Read some things about it online and people are saying its because of an ungrounded outlet, but this was in a post made about this issue occurring with a laptop, not a desktop. I am wondering if this does point towards PSU issues. Any clue? Or is a bit of visible electricity between the HDMI (2.1) cable and my GPU normal?

E: wanted to add that out of probably 5 times I plugged in the HDMI cable, one time my PC instantly restarted after plugging it in without me touching anything.

 

[chocopasta]

Let me throw out a couple ideas. Borrow a known good working video card similar to your 3070 - just about anything in that 3xxx range, or even a 2xxx or 10xx and see if using that card solves or helps with the problem. That nv----- error code points to the drivers, but the card might actually be dying. Some of the other info. you posted also suggests this.
Secondly: having gone through a similar problem about a year ago, borrow a known good working power supply and run that for a few days.
I offer these suggestions as a little over a year ago I spent a couple months trying to track down the same type problem, only to find that my PSU had finally reached the end of life and replacing it solved the problems. The PSU failing had also caused some corruption in one of my games and a couple programs.

Awesome, thanks for your reply. As I stated in my reply to someone else in the message above this one, I have found something interesting. When trying to plug an HDMI (2.1) cable into my GPU, I am seeing electricty between the cable and GPU. I read online in a post regarding this issue that this has to do with grounding. This post was from someone experiencing this on their laptop, so the focus was mainly on the charger, rather than the PSU. But could this be a clue my PSU is actually dying? Also had it once where after plugging in the HDMI cable my PC instantly restarted, but this only happened once in the probably 5 times I connected the HDMI cable.

E: My apologies to you aswell for the late reply. Was away for a bit so was not able to get back to you. Do appreciate your suggestions though, hope you can share your thoughts on this new finding I did with the sparks, as borrowing parts is quite tricky for me.

 

[beyondlogic]

Awesome, thanks for your reply. As I stated in my reply to someone else in the message above this one, I have found something interesting. When trying to plug an HDMI (2.1) cable into my GPU, I am seeing electricty between the cable and GPU. I read online in a post regarding this issue that this has to do with grounding. This post was from someone experiencing this on their laptop, so the focus was mainly on the charger, rather than the PSU. But could this be a clue my PSU is actually dying? Also had it once where after plugging in the HDMI cable my PC instantly restarted, but this only happened once in the probably 5 times I connected the HDMI cable.

E: My apologies to you aswell for the late reply. Was away for a bit so was not able to get back to you. Do appreciate your suggestions though, hope you can share your thoughts on this new finding I did with the sparks, as borrowing parts is quite tricky for me.

If arcing from hdmi I would say it's a bad cable first replace the hdmi