Apparently a number of HP Laptops are being hit by a nasty bug which causes repeated crashes, this time though it is not a Windows 11 issue but seems the cause of a recent Support Assistant update. The solution for now is to uninstall Support Assistant and related apps namely Dell SupportAssist Remediation and Dell SupportAssist OS Recovery Plugin, reboot afterwards. Hopefully Support Assistant will be fixed in the near future.
See more detail in this article https://www.techradar.com/computing/windows-laptops/dell-laptops-reportedly-hit-by-nasty-bug-causing...