Windows soft freeze randomly

[Chemiosmosis]

Hello.

I have desktop with

Ryzen 2700x, GeForce 1050, windows 10 64bit on NVMe M.2 SSD, 1 sata SSD and 1 sata HDD, 32GB (8*2+16) DDR4 RAM, ASUS B450 mainboard.

 

My PC freeze randomly, but complete stuck - rather soft. I'll call this phenomena as just 'freeze' for this topic.

Mouse moves, and running programs works well.

Only tasks that require read something from drive didn't work; open file, open new program (including task manager), read file by already running programs, etc.

 

By observing task manager and resource monitor (start with booting and wait until freezes again), All drive shows 0 KB/s and 0% read during freeze.

While freeze, CPU, ram, GPU, and drive write are all show 0% or very low usage, unless I do something with already running program.

Write something to drive seems no problem (like normal, done without lagging), If I try to save something at running program.

 

However driver reading is not perfectly blocked. It is just extremely slow. Some light file (like txt or jpg) open after 10s min, and restart PC (alt+F4 at desktop) also done before 1 hour passes.

 

Followings are what I done for try to fix this problem:

Change SSD sata port

Migrate C:\ and windows to new NVMe M.2 SSD

Update all drivers, bios, chipset, etc.

Update firmware of all SSD and HDD.

SFC and DISM - try both online connection and ISO file from MS media creation tool

Windows repair installation - using ISO file from MS

Change Regedit MSI (Message Signaled Interrupt) setting.

Reinstall MS standard SATA AHCI controller driver

Disable automatic HDD power down timer - windows power option

Disable and set manually automatic control virtual memory settings

Drive surface test (easeus), no problems.

Delete unnecessary programs.

Delete temporary files (ccleaner)

Check again that microsoft defender is not running.

RAM memory test (memtest86), no problems.

Disable superfetch (Sysmain)

Check task scheduler (no task start running when freeze start)

Turn off running programs (using task manager, include antivirus comodo) while freeze.

Just waiting until unfreeze (>8 hours, still freezes)

 

PC still freeze after all above and I have no idea to what can I do further.

 

All CPU, RAM, drive, GPU, Power usage are low and has sufficient margin before and during freeze.

CPU, GPU temperature are sufficiently low and no thermal throttling before and during freeze.

I think some windows task or process occupy something and don't let other task approach to driver reading.

Can you suggest anything that I can do, to solve this problem or at least figure out more detail about this situation?

 

thanks.