Windows 10 hangs after long time idling

Hi my pc:
108500K stock 4800mhz
2x16 GB DDR4 GSKILL 3200mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming OC
Aorus Z490 Pro Gaming
1 TB SSD

I have updated Windows 10 to H20,the newest version. I installed windows 10 month ago with new pc. So far so good,games not crashing all stable.
My pc is on 24 hours. Today was idle 5-6hours in desktop. After few hours when i go to use pc, i run Google chrome and then all suddenly freezed. I mean i was able to touch/move mouse, but all stops resonding. Chrome,search bar,start button stops responding. Then i make ctrl alt delete and black screen with blue circle. So i make hard reset.
It happened first time that hang of system.
Is there somewhere my pc not stable or its a windows thing? Like i said pc was idle 5-6 hours when i go to use pc, i turned on google chrome and then all suddenly hangs. I checked EVENT VIEWER: Nothing,0 entries about any errors.
Thx.

ah ps
NZXT cam was on background and epic launcher + steam and msi afterburner

PS:Running currently Karhu Ram test no errors.

Could be related to SATA-Devices being sent to sleep.
I have an interesting issue where Windows will send harddrives to sleep during use wich causes the same symptom of programs not responding for a couple of seconds.

You could also try disabling NZXT cam…

oki doki thx

Not happened again since 23 march iits ok or search for hardware faults?