Diagnose Random PC Crashes

My desktop likes to keep me on my toes: it can run smoothly for hours and then, without warning, the game I’m playing—any game, from lightweight indies to big-budget titles—simply closes or the whole system reboots... (Budget: €18 - €36 EUR, Jobs: C++ Programming, Computer Repair, Computer Security, Linux, Network Administration, System Administration, Technical Support, Troubleshooting)