Hi TM.
Thank you for your reply.
No software messing with clock speed, at least none that bothers to tell me. I set clock speed in the BIOS, and it is set for "reliable". I am not over-clocking. This PC is fast enough in this mode.
Here are the specs as reported by Windows:
Device name Maroon
Processor Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz 3.40 GHz
Installed RAM 8.00 GB (7.89 GB usable)
Device ID 4FF50ED5-7883-4776-9246-57559ECE6F53
Product ID 00326-10000-00000-AA483
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display
Edition Windows 10 Home
Version 21H2
Installed on 25/09/2021
OS build 19044.2006
Experience Windows Feature Experience Pack 120.2212.4180.0
This is an old but reasonably capable PC. It does not exhibit any other reliability issues.Regards,