Abnormal shutdown of desktop

[harsh bothra]

My desktop shutdowns randomly while using normal applications like chrome but works fine during gaming. My configurations is

AMD FX 8320
8gb RAM
AMD R7 260x
ASUS M5A78L USB 3
SMPS cooler master 450Watt
UPS Zebronics 600 watt

 

[Hendra_Nucleo]

Just off without process like power cut, or shut down using normal process ?

 

[harsh bothra]

Didn't work