PC keeps shutting down

[Shubhankar_1]

I recently moved from a 110v country to a 220v one and recently my PC arrived and I have the Cooler Master Elite V2 500w so I'm able to switch the voltages. So I changed it to 220v but I noticed that my PC keeps shutting down after an hour for some random reason. Suddenly it shows the blue screen with "Shutting Down" and the circle spinning and it closes which you get after u click shutdown (Not the typical blue screen of death). Also the wall socket isn't grounded so i'm not sure if that's a factor. No messages get shown and nothing else happens.
CPU: Intel Pentium G3258 (Overclocked to 4.1Ghz)
GPU: GTX1060 6GB
RAM: Kingston HyperX Fury 8GB
PSU: CM Elite V2 500w (Running the 220v)
Storage: Adata 120GB SSD
Operating System: Windows 10
Motherboard: H81M-E34

Please Help!

 

[Dark Lord of Tech]

THE QUALITY OF THE PSU is poor , so it could be the issue.

 

[Shubhankar_1]

THE QUALITY OF THE PSU is poor , so it could be the issue.

Took your advice and changed my PSU to a Corsair CX550. Still the same problem