Very high CPU and memory usage unless I open the task manager EVEN after factory reset

Anonymous
2020-05-01T20:50:34+00:00

Hi all i come for help as I've been trying to fix this problem for the past week but I'm new to the PC world so I need help.

I bought and built this PC myself about 4 months ago and it worked fine until last week. The fans started blowing pretty loudly even when doing the most simple tasks and the PC gets way hotter than normal and as soon as I open the task manager the CPU and memory (even disk sometimes) are at 30-70% usage for a second then they go back to normal levels. Even weirder the percentage shown at the top of the task manager dont match the usage of processes running at all, and when playing video games I have no in-game performance problem, but things like discord or google stop working completely. At first I thought I had a virus so I tried running complete scans with avast and windows, then I tried a rootkit scan with malwarebytes and finally an offline scan with windows. Problem was still there so I tried a factory reset, still it wouldn't go away so I reset my pc and downloaded windows from a USB drive so now I don't know what to do.

Specs :

CPU : Intel Core i5-9400F 2.9 GHz 6-Core Processor

Motherboard : MSI MAG B365M MORTAR Micro ATX LGA1151 Motherboard

Memory : G.Skill Ripjaws V Series 16 GB (2x8 GB) DDR4-2400

Video Card : Gigabyte GeForce RTX 2060 SUPER 8 GB WINDFORCE OC Video Card

Storage: Crucial P1 500 GB M.2 NVME Solid State Drive

Windows for home | Windows 10 | Performance and system failures

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  1. Anonymous
    2020-05-02T00:05:13+00:00

    Yes, the usage goes dramatically down and the fans get slower.

    I ran a rootkit scan with malwarebytes, it didn't find anything, and here's the CPU load :

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  2. Igor Leyko 112.4K Reputation points Independent Advisor
    2020-05-01T23:19:47+00:00

    Are you still have heavy load falling after Task Manager starts?

    If yes please check CPU load with resmon and check PC with Malvarebytes.

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  3. Anonymous
    2020-05-01T22:59:22+00:00

    I ran the test that reboots your PC. Though this is what I see after the scan, isn't supposed to show the results of the scan ?

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  4. Igor Leyko 112.4K Reputation points Independent Advisor
    2020-05-01T22:42:55+00:00

    According Task manager there are many enough memory committed to programs.

    RamMap do not show anything abnormal.

    So please clarify, did you run virus scan in Windows or offline (with PC rebooting for test)?

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  5. Anonymous
    2020-05-01T22:07:55+00:00

    No, I rarely have more than 5 tabs open.

    Here's the memory usage 

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