Random Freezes Windows 10 Ver 21H2

My computer is new, custom built by a reliable computer shop:

Random freezes Windows 10 21H2

Make sure every driver and also BIOS (UEFI) are fully up to date (double check).

And then, return it to the shop who built it and (a) ask them to test hardware and (b) why is it freezing.

Windows 10 21H2 works reliably on a manufactured computer.