Windows 10: Display Randomly Turns Off and Fans Speed Up; Has To Be Hard-Shutdown

Windows Version: 1909 (OS Build 18363.1198)

This forum has been such a great help before and I come seeking your aid once again.

The problem is summarized pretty well in the thread title, but some additional info/context may be helpful:

-Problem began occurring about a week ago, with no changes to the build, for no apparent reason. Occurs once a day. Fans speed up to 100% possible RPM, it sounds like.
-Computer can be restarted immediately without any apparent issues.
-I have reviewed prior posts on this forum and elsewhere and am aware that this problem is often reported in relation to a GPU/temperature issue. I recently updated the GPU driver and the issue still occurs. The problem does not appear related to internal temperatures. The crashes have so far happened while the computer is relatively idle (i.e. browsing internet, playing music, maybe a word processing applications open) where it hangs out ~30 C and has not yet happened while gaming (where GPU will plateau at about 80 C with fans going at maybe 60% max RPM).

I am wondering if a sensor has gone faulty? Any suggestions as to how to diagnose this issue, or a way to get a log/documentation on the crashes would be helpful. I'd be more than happy to replace my GPU, but don't want to bother if the problem will persist.

Thank you in advance for any assistance anyone can provide. If there's a more appropriate place to put this thread, please just let me know.

:)

 

Overclocking / Undervolting guide for Vega 56 or 64?

Here's a quick laundry list:

List of software to use for overclocking and testing
Examples:
Wattman (and how to find and use it, like an overview, including profiles)
Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

Step-by step overclocking in Wattman
Fan speeds
Power limit
Temp limit
Voltages
Core speeds
Memory speeds

 

Fan randomly starts at high speed

While not doing any cpu intensive tasks, my fan has started up randomly very fast, and i have to restart my laptop to make it go back to normal

 

Pc problem, randomly doesn't turn on sometimes.

"
Fast startup is a feature in Windows that helps your computer start faster. You can use the following steps to enable or disable fast startup.

• Type Control Panel in the search box.
• Click Control Panel.
• Click Power Options.
• Click Choose what the power buttons do.
• Click Change settings that are currently unavailable.
• Scroll down to Shutdown settings and uncheck Turn on fast startup.
• Click Save changes."