Hardware Reserved Memory is to high

Hello friends. As I mentioned in the title, a problem that never happened before started happening. I have 16 GB RAM on the laptop. But today I felt there was a problem and when I checked it, it shows 14 GB RAM in the task manager as hardware reserved and makes the computer unusable.

Ryzen 7 5800H.
16 GB RAM.
500GB SSD.
RTX 3060 GPU.
W11 Home Single Language.

Dell G15 Ryzen Edition.

Still Has Warranty but in my counrty DELL support not working on weekends.

This is the specs of the computer. I will also tell you the methods I tried below.

I looked at dozens of forum threads.
I checked the tick in MSConfig settings.
I changed the RAM.
I tested the RAM and no problem.
I Tested full Diagnostic from bios no problem.
I can see the RAM as 16 GB in BIOS and in Windows.
I cleaned the RAM.
I installed other RAM and tested it.
I updated the BIOS.
I checked the BIOS settings.
I uninstalled both AMD and NVDIA Video Card Driver with DDU and reinstalled the latest one.
I re-install windows.
None of them gave me a solution. I am waiting for your advice, thank you.