so i have a corsair psu 750w and i had a 1070 card when i bought my computer. after awhile i bought a 1080ti cause i needed a higher gpu for a better monitor and now every time im playiong a graphic intense game my computer will shut off and flicker lighs on the tower and will not turn on until unplug the power cord and re attach it. im thinking its a faulty psu cause it usually gets up to about 87c according to my monitor. not sure if its a faulty psu or my graphics card is just sucking to much power and i need anew one.