Ok, so my pc I recently built (i5 6400, RX 480, 8 Gb ddr4 ram) has been crashing with in the first minute or so of starting up a game or bench mark like firestrike. It performs fast doing normal tasks, streaming content etc. but whenever i try to play a game with in the first minute or so my pc crashes, it goes a solid color like pink grey yellow i've seen quite a few and makes a consistent buzzing sound but doesnt restart. Plus the dram and gpu lights continue to stay on. All my drivers are up to date. Any ideas? Please help..