Troubleshooting a Frustrating Monitor Crash: My Gaming Dilemma

I’ve been grappling with a persistent and troubling issue on my PC while gaming for the last 10-13 months. Each time I attempt to dive into a moderately graphics-intensive game, I can usually enjoy a few moments of playtime before my screen goes haywire. To give you a glimpse of this problem, here’s a video reference.

The Problem at Hand

The crash is characterized by an alarming buzzing noise emanating from my external speakers or headphones, accompanied by a strange flash of random colors across my monitors. After enduring this chaos for roughly 3-10 seconds, the screen ultimately turns black. Despite the fans running at a diminished intensity, I find that my attempts to revive the system—either through the keyboard or a gentle press of the power button—are futile. Interestingly, the HDD panel light continues to blink at about one blink per second after the crash. This leaves me no option but to resort to a hard shutdown, which I loathe.

Oddly enough, there was a six-month period where my PC functioned flawlessly. I even left it powered on continuously to avoid rekindling issues. However, a power outage ultimately forced a shutdown, and when I powered it back up, the problems returned with a vengeance.

Steps Taken to Resolve the Issue

In my quest for a solution, I have extensively researched remedies and attempted numerous fixes, including but not limited to:

1. Performing a complete wipe of the computer (DBAN) followed by a fresh Windows installation.
2. Monitoring temperatures while gaming and maximizing fan speed.
3. Executing MemTest.
4. Running chkdsk.
5. Conducting stress tests on the GPU, CPU, HDD, and RAM.
6. Lowering my GPU performance settings.
7. Upgrading the power supply unit (PSU) to a higher wattage.
8. Booting into Ubuntu to check for issues.
9. Using BlueScreenViewer (finding no relevant results).
10. Reseating all cables securely.
11. Leaving the system turned off for a week.
12. Keeping the system on to observe for crashes.
13. Conducting a virus scan.
14. Uninstalling antivirus Software.
15. Updating GPU drivers to the latest versions.
16. Testing with different monitors.
17. Cleaning the