PC freezes after being left idle for a few hours

My PC has been freezing randomly after updating to 20H2 as well. If i leave the PC on idle for even 10 minutes, ill come back to windows 10 basically unresponsive. I can move my mouse and right click but can't open any programs or windows. Shutdown/Restart does not work and i am forced to do a hard reset. 

It baffles me how Microsoft can mess up so bad. I use my PC for work/gaming and need it to be stable. Windows 10 is becoming a complete unstable mess with every new update. No wonder so many people still use windows 7. 

My Main Specs are:

Ryzen 3700x

Gigabyte x570 Aorus Pro

Corsair Vengeance RGB Pro 3000mhz 16gb

AMD VEGA 64 GPU

850 Watt Super Flower Leadex 3 PSU

Samsung 970 Evo 1tb Nvme M.2

Hey, 

Just want to say I've been having freezing issues like you as well and I agree I think its from the 20H2 update. I have microphone issues since that update as well and I confirmed that by applying and rolling back the update to another one of my custom PCs because the issue arose then went away by doing that. This update has been a mess and I have the same issue where the computer freezes after idling, but everything is up to date. I also use chrome remote desktop and cant access my PC, so when I actually see it in person, its locked up and have to do a hard reset. Also my screen flickers all the time now before starting a video or closing out of one since this update. I'm just annoyed and wish I could've never applied this 20H2 update because they sent out buggy garbage on my pc and still no patches to be found

Thanks this is now clear, you need to restore default power configuration so that we can ensure that PC will run after idle

Restore default power options

-Press Windows key + R then type:

powercfg -restoredefaultschemes

-Restart PC and check.

Let me know what happened and make sure you have done all the steps above.

If none will work from the above solution I suggest to do an in-place upgrade wherein it will upgrade the device to the latest version and repair all issues without deleting any files.

Note: before doing this make sure to create a restore point: https://support.microsoft.com/en-hk/help/402753...

1. go to this link: https://www.microsoft.com/en-us/software-downlo...
2. Select Download tool, and select Run. You need to be an administrator to run this tool.
3. On the License terms page, if you accept the license terms, select Accept.
4. On the What do you want to do? page, select Upgrade this PC now, and then select Next.
5. After downloading and installing, it should fix the issue.

Reference: https://www.microsoft.com/en-us/software-downlo...

Note: if you receive error: “This Pc can’t be upgrade, follow the steps below”

Method 1. Go to C:$WINDOWS.~BT\Sources\Panther then delete the file name compatscancache.dat

Then try again or reboot the PC first then try again.

You might not see the folder as it is hidden, make sure to show hidden files first.

When it freezes it acts like something I've never seen before with my past computers. When frozen I can still move my mouse, and if I hover over something it shows the little graphic that I've hovered over it. I can move the windows of programs around the screen but I can't exit or minimize. I'm not able to ctrl + alt + delete or esc, I can't open task manager. I can't shut down through the start menu. The only thing I can do is shut it off by pressing the power button on the PC.

All my drivers are up to date and when I troubleshoot it doesn't detect any issues. I've seen a couple threads on here where people describe the same problems I'm having but they are on older PCs so I thought I'd make my own post.