try remove all system ram and install only one ram chip back to test.  possibly one or more ram is not good.  or borrow some good ram compatible with opti 980 to test.  I think ram is same as opti 780 ddr3 1333.
so i was play minecraft today playing bedwars then the pc froze then i got a bsod saying memory dump this happened to me when i setted the pc again last time i tried to boot it up then i heard 5 / 6 beeps from the pc itself then there is no display i checked the monitor it was ok my graphics card is gt 210 palit edition, minecraft has 4gb allocated ram (my pc has 8gb ram), nothing is processed at the background, minecraft is only open anyone help? im so scared if its the motherboard, or the processor its ok if its gt 210 or memory ram becuz i can replace it my os is windows 7
6 beeps and no display