BSOD While Gaming, Getting worse over time, Error 0x8000000000000002

My computer is a custom build, it is a bit old now, at least 5-6 years. But for the most part it has worked well and is still viable for most gaming. I have always gotten some BSODS while gaming in the past, like maybe one a week, but i always just chopped it up to probably bad drivers or some fluke and it wasn't a big deal.
But more recently, like in the last 6 months, it has started to get worse. It was happening to me about 3-4 times a week a few months ago; and now in the last month or so its been BSODing on me about everyday, and only while i am playing games, never while browsing the net or watching youtube or anything else.

Starting about 6 months ago as well, i notice my computer started to fail its POST. Which means "Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information."

At first i was worried about my video card, but upon further research i realized just because it cannot initialize video doesn't necessarily mean its a GPU problem.

I often have to turn my computer off and on and off and on several times (sometimes up to 10-20 times) before it will pass the POST. It seems that if i Power Cycle my computer, i get more success at booting. (Turning if off and then back on again as quickly as possible before the power completely leaves my PC.)

So, as of the last week or so, i can only play a game for usually between 10 minutes and an hour before the game either randomly crashes or my entire computer bluescreens.

I have run a couple of HD scans and didnt come up with any big errors.
I have kept an eye on the CPU/GPU temps and they are always within acceptable ranges even while i am gaming.

I have UNDERclocked my GPU and that does seem to increase the amount of time i can play a game before it crashes, but it is still happening multiple times a day.

Currently, i am suspect of the PSU as the culprit, but i would like to get some inquiry on my BSOD logs just to get as much information as i can before i buy a new one.
Hopefully it is just the PSU and not the motherboard.

So, i just had a bluescreen again. And earlier i turned off autorestarting after BSOD so i could write down the STOP codes.
The bluescreen errored:
PAGEFAULT_IN_NONPAGED_AREA
STOP: 0x00000050 (0xFFFFFA800FDD587B, 0x0000000000000000, 0xFFFFF800032B05AF, 0x0000000000000002)

Though when looking through Event Viewer, Some of the BSODs in the last week have no stop codes, and others do have stop codes. But all of the BSODS happening in the last week have all happened while i am playing stressful games.

I opened my computer and tried removing my GPU and just trying to boot my computer using the onboard GPU but the computer still gave me the same beepcode and wouldn't boot.
I also tried reseating the memory, and also booting the computer with only one stick of RAM (tried with both sticks) and still the problem of booting persists.

The only way i can get my computer to successfully boot is to turn if off and on and off and on again until it eventually works.
Since taking my GPU out didnt solve the problem, i am leaning even further away from it being the source of my BSODs.

I haven't ran any Memchecks yet but i will try to run some tonight. But so far it's looking like either a PSU, HDD, or Motherboard problem...

Would appreciate any input and getting my logs checked out just to see if my BSOD problems line up with my booting problems.

Hi XRuecian,

In the case of a new BSOD, please run the DM Log Collector again.

Some of the BSODs in the last week have no stop codes, and others do have stop codes

Those aren't BlueScreens.

Certain tests I may ask you to do again, due to details that need to be known.

Sure, thanks for the help.
Hope i can get some answers today.

EDIT: I just looked inside the new Zip file i made for you, and it ONLY contains the 8 dumps. How come this time it doesn't have logs about the rest of my system information? I did the exact same thing, i ran DM Log Collector and thats the zip it made.

It seems that the SFdebugFiles Folder that the DM Log Collector collects the logs into before zipping them is broken. When i try to zip the files myself, it tells me that The system cannot find the specified files. And when i try to delete the SFDebugFiles folder, it tells me again, that this folder cannot be found. (Even though im looking at it on my desktop and see the files inside of this folder.)
I can only guess this is related to my resetting my CMOS yesterday and it reset my accounts security settings and probably messed something up.

Okay, while i was writing this i managed to get the folder to remove itself when i tried to zip the folder itself rather than the files inside of the folder. Going to run the log collector again to see if it can successfully give me a zip now that its not trying to overwrite 'nonexistant' files.

EDIT2: Well, after running the Log Collector again... it made a new zip, this time with all 8 DMP files,
the DxDiag, drivers, driver_status, autorun, and service_status reports, but all of the other reports are missing. The Log collector didnt seem to run into any errors or problems while it was running but it definitely did not successfully zip all of the reports. Not really sure what the problem is.
Will upload these reports for now until you can give me some advice.

Don't upload a new zip in your first post, but upload it in your new post. Makes things a lot easier.

Run the DM Log Collector again and upload a new zip, the current uploaded one misses several logs.
You could check if there are

1. 18 .txt,
2. 1 .nfo,
3. 1 or more .dmp,

files present, if this is the case then all logs are present :)
If there are a few missing, no problem as we can get them manually if required :)

It is just a template I use when files are missing, I already read your post.
If after a few attempts still many files are missing we'll try another version of the tool.