intermittent full case & cpu fan spinup (100%) at random times not gaming.

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Periodically when browsing the Webb the screen will go black/blank & all of the system fans will go 100%. Have 3 case fans & noctua cpu air cooler with a Fractal G mid-tower case. Have to do a hard reset to shut the unit down. Then shut psu off & hold power button on case to discharge electricity? Then flip psu unit back on & restart computer. The screen flickers a few times, then posts & then goes to desktop. My thoughts is the nvm .2 pci drive going bad or is it a bad psu? Any thoughts would be appreciated.

windows 10 latest version, cpu amd 5600G,16gb ram,500mb NVMe M.2 ssd, gpu 2060,500W psu.
NVMe M.2 SSD

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Have you run a full system scan with your anti-malware program to make sure you didn’t inadvertently pick up one of those nasties? Malware can sometimes cause some really strange symptoms when it tries to do what it’s been programmed to do, even if it’s unsuccessful.

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g3b

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g3b wrote:

the screen will go black/blank & all of the system fans will go 100%

Have a heat problem?
Have you cleaned the inside of the case lately?
Checked the temperature of the internals (CPU, GPU, etc)?

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