gpu spikes at 100% and i hear the van as soon as i log in to rs 1 min after laptop just shuts down and have to boot up and select boot in normal mode. And i tried min settings , reinstalling game, reinstalling drivers all sort of versions. Im really at the end of my wisdom.
This sounds like some sort of overheating or hardware issue. Threaded rendering, when working correctly, will raise FPS and GPU usage. You can reduce it by reducing foreground FPS in graphics settings and/or enabling vsync