Hi and thanks in advance. I used Dell Recovery Assistant to wipe my SSD clean and reinstall Win11. Afterwards i installed all needed/suggested drivers from the Dell website Support for Dell G15 5525 | Drivers & Downloads | Dell US What i tried afterwards in SupportAssist:a) SupportAssist >>Home >> Troubleshooting >> I want to troubleshoot my PC>> I want to check a specific piece of software => Starts working and never finished (even after hours of waiting). Just a progress sign in the middle going round and round. b)  SupportAssist >>Home >> Troubleshooting >> I want to troubleshoot my PC>> I want to check my whole PC => Starts working but shows 0% for hours. The activity history shows later that it ended with a nonspecific error. c) SupportAssist >>Home >> Checks >> Do them all => no updates found, no files deleted, no performance optimization, 3 registry changes, unspecified error for hardware checks.   So, at the current moment i really believe this to be a hardware issue with the GPU or at least some GPU-related part. All games break down with some kind of message with "LowLevelFatalError".  When checking Windows11  "Security and Maintenance" => "View reliability report" then there i find many "hardware errors" with timestamps at the moment the games broke down. So now i´m gonna start Dell SupportAssist and use the button "Get Support" to make Dell fix this problem. Lets see what that will do. Might take a couple of days (or maybe unfortunately weeks) till i have more news, but i´ll post again!     P.S.: i will add pictures tomorrow, since  this Dell site won´t let me upload any pictures now (24h limit exceeded  and so on --.--')...
CPU: AMD Ryzen 7 6800H RAM: 16GB GPU: Geforce RTX 3060 Games: Tiny Tactics, Detroit Become Human, Control Ultimate Edition In-game setting: All graphics set to the lowest, ray-tracking turned off Things I have tried: (1) updated nvidia graphics driver (2) turned off background irrelevant apps (3) uninstall and reinstall redownloaded nvidia graphics driver (4) redownloaded games I can't play the game for more than a couple minutes without crashing, while I see people playing the same game perfectly on the Dell G15 with lower hardware 
Dell G15 5525, Games crashing after few minutes