12 Beeps on startup

Apr 14, 2018
1
0
10
Guys. . . I've been having problems with my PC since the last couple of days, I've tried as much as i could but no solution ..
Its basically 12 beeps on startup and Pc boots normally. But while playing games it switches off abruptly.
My PC spec:
Intel i5 4440 3.1 Ghz
Asus h97m-e
Corsair Vengeance 8×1 DDR3
Asus strix Geforce gtx 960 2GB
Corsair VS550W