PC shutdown unexpectedly and won't turn back on

OutStandard

Commendable
Dec 8, 2016
2
0
1,510
I really need some help. I recently bought a new graphics card for my pc (AMD radeon RX 480) from my old Radeon r7 200 series. I had a windows boot problem and managed to get it fixed by re installing windows. I then started to get blue screens of death randomly not too often though. A little time later i was playing a game and the pc shut down and didn't turn back on. (The pc smelt hot) i then got a replacement power supply and that worked for about a month when the same thing happened just now. It shit down and wont turn back on, again it smelt hot. Before my new graphics card update nothing like this happened but its taken along time for these problems to happen, around about 2-3 months.

My specs are:
CPU: Intel core i5 750
RAM: 2x4 8GB DDR3 1866mhz
GPU: Amd Radeon RX 480 (from old r7 200 series)
Power supply: 750w (one before was 650w)
Motherboard: ASUS P7P55D