[SOLVED] Why is my monitor shutting off on it's own?

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Apr 12, 2020
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My monitor will shut off randomly right after matches. The actual PC will still be running however, and making lot's of noise as if the fans are on full throttle. I have concluded that it is the PC's fault since I have used the monitor on different hardware with no issues. In order for it to boot up again, I have to restart the desktop manually. This only happens with certain demanding games, and never in the middle of games; usually right after the match has ended. The screen will just go black and say "No signal." I think this is due to the motherboard or PSU. However I don't which one to buy first. Any ideas?
 
Solution
Yep. Sure sounds like it. Which usually means 1 of 2 things and both are related. Lack of airflow. Either there's gunk/dust/dirt/debris accumulated in the heatsink under the shroud, blocking air from reaching the heatsink, or there's little to no air actually reaching the gpu, so it's sitting in a hot-spot that only gets hotter with lengthy heavy loads. Having fanless/eco mode doesn't help as it allows that hot-spot to happen in the first place, meaning the gpu works harder to play 'catch-up' on the temps.

Fanless is great for ppl who never push a gpu hard, but if you never push a gpu you really don't have reason to have needed it in the first place.

With the case side off and fan blowing, you are getting better temps, so I'm...
Update: The problem seems to be fixed because it hasn't happened for a while. I cleaned out the dust of the GPU and set a custom fan curve. The problem also could have been AMD drivers because it hasn't happened ever since I updated to the new one. The only thing is that the GPU still reaches temperatures of around 85 even while the fan speed is at the max. I would also say that the GPU is well ventilated since there are 3 fans right next to it. And there is nothing in the path of the GPU fans.