The GPU, it turns out usually uses Intel HD but whenever I play a game, it switches to NVIDIA. So no issues there and the drivers and all are up-to-date. After seeking help from a friend, the issue was sorted after I re-flashed the BIOS of my GPU and stopped all the automatic update processes via msconig.exe! I'm yet to figure out what the precise process is. Thank you nevertheless for all your help. Much appreciated!