"Denoise" slider? Specifically which control causes the restart? And by restart do you mean blue screen, or an actual immediate reboot?
Have you checked the Windows system and application logs?
It's an actual immediate reboot. No blue screens, no error messages. The Windows event log states: "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
Your level of instability generally indicates something wrong at the hardware/driver level, it's unlikely that an application bug can take down the OS. I would go to the system manufacturer's support website and start checking for new drivers for any part of the system. And check all of their troubleshooting info, knowledge base, etc. Make sure the firmware is the latest.
One approach is to bring up Device Manager, right click on each item, and perform an update driver. Always let Windows go out and search for a better driver. Be sure to expand the "System devices" group and perform this action on all sub-items.
I know you did memory checks, but you can also be more sure it isn't a memory problem by using half of your memory at a time, see if the problem follows either half.
Try a different graphics adapter. Strip out (or disable in the bios) any hardware that isn't absolutely necessary, such as a sound card. Check your bios settings. Disable or remove your Ethernet adapter. "Dumb down" the system to the absolute minimum that will still let you check for the crash.