Why windows degrades and what to do?

Question

Windows Server

Recently, a Windows Server 2012 R2 PC has started to behave strangely. If earlier only when running productive programs there were difficulties, now when you turn it on and try to change the settings in the control panel, the block “your PC has a problem and needs to be restarted” crashes, after rebooting, a window crashes with your PC, there is a problem and you need to send information to Microsoft . I tried running the RAM test, everything is fine, I tried the processor test, the processor is new, I bought it recently, everything is fine, the ssd is also excellent.
Why is it getting worse and worse every time and what to do?

Answer 1

Is it a server machine? then it is necessary to pull the vendor.
is it a regular machine with gold platinum power supplies and ECC memory?

Answer 2

And I'll try to guess. The registry has reached its limit. It's not unlimited.) But in general for good details).