there open hardware monitor that i use to look at gpu and cpu temps and power supply voltages. prime 95 or intel burn in will stress your cpu. Memtest will test your ram..there are a few gpu test. on the burning part..your nose and eyes are the best thing to look for burn marks or smell cooked parts. i would look at the video card first to see if it was the power circut in the gpu..if the gpu gets to hot it can cause what called a thermal runaway..most gpu and cpu should shut down to stop this..sometime it works but if the card parts are made cheaply or the bios is not set right you can burn parts.