diagnosing your PC

So my PC just freezes whenever I play games, and it occurs randomly. Whenever it locks up, the screen just freezes, mouse and keyboard controls don't work, audio seems to stay static, the LEDs of my case fans are still on. But I have to reset it by pressing the reset button on my case. After the...

i have a toshiba satelite pro laptop, with windows 10 installed. The laptop has been stuck on a 'preparing automatic repair' mode for almost 2 days now. it then comes up with a sc reen saying it is diagnosing my PC only for it to not work. It then gives me options such as continue to windows 10...