Ever get web pages saying "Your Flash Player is Out of Date, You need to update" yada yada?
Hackers use this premade page to gain remote access to your computer, they can send command line prompts to remote shut down your pc among other things. Called a "Man in the Middle" attack.
Basically once you see the screen your ****ed, the script has been ran and the port (i think, novice here) is open for them to see what you type and pictures that you are viewing on the net.
Are you connected to the internet when you play?
They can also wipe the event viewer to leave no trace of their presence.
It may not be a MIM attack but if your hardware is fine and the OS is fine, it may be a sneaky ****er out there.
Im not sure if they have to be on your network or if they can pull it off from another state, Im still learning offensive security, you need to know how they do what they do before you can build proper security, then you test your security using their current methods and tools. I guess they call it White Hat or hacking with ethics.
Edit: I highly doubt it, but it may be the surge protector, if you have other things running off the same surge protector you my be flipping the fuse. Generally they are 15 amps so only run like 12 to be safe, my desk top pc uses 4 amps on 120v and 2 amps on 240v.
I used to run 10 amp appliances and if I plugged fans and other stuff into the same strip the fuse or "breaker" would flip to prevent fire, its a good thing but if your careless or not taking that into consideration it may seem bad to you, but better than burnt walls.