Black Screen Issue - No BSOD. No warnings. No error log. No dump files

Your PSU is underpowered and the recommended 650w is the minimum.Don't forget that when gaming,the power has three states,idle,cruising and full [spiking].
Suggest you install a more powerful PSU and see what happens,e.g. any further crashes.
The ---live kernel event---is normally indicative of driver problems,but this could be a "domino effect" from the PSU.Best to go one step at a time.
Have a look in ---dxdiag --- and note the full driver version found on the Display page.Download that version,or later if available,from the maker's site ONLY and if necessary,use Display Driver Uninstaller,[DDU] to completely remove the existing driver,in Safe Mode.Only use Device Manager to uninstall if DDU is not available,it does a better job.

I’ll give that a try and will keep you updated thanks a lot for your help