ProBook 450 g3. Screen will randomly freeze then shrink then return to normal in 2 - 3 seconds

[mjtknun]

My screen will, seemingly at random, freeze for a second, then shrink, then return to normal. I cannot figure this out. It happens on a fresh install of Win11 with nothing else done or configure yet. I have removed and re installed driver several times. 

[Jos1_]

Hello mjtknun, I am going to leave you some commands for CMD or Command Prompt, always run in administrator mode.

This will scan for and restore corrupted system files.
• When searching, type CMD.
• Right-click Command Prompt > Open as administrator.

DISM /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth 

When you're done, type another command to start System File Checker.
In the same command prompt window. Copy and paste this command:
type sfc /scannow (note the space between "sfc" and "/") and press Enter.
After you see a message that says "Verification 100% complete," type exit.
CMD how much ram does my laptop support

How to use CHKDSK command?
Type cmd (or command prompt) in the search box on the taskbar. Right-click Command Prompt and select Run as administrator. Type chkdsk and press the Enter key. This command will cause the CHKDSK utility to check for problems without making changes

Greetings.