Farcry 3 gameplay restarts my computer

[JanithRushantha]

It says critical structure corruption with a buzzing sound and restart my pc. Why is that? I have win 8.1( not activated) and my specs are core i3 4150,r9 280,4gb hyperx,1tb hdd,antec gx500, fsp hexa 550w psu every answer is highly appreciated.

 

[Joseph DeGarmo]

Bad PSU. Switch it to a better quality unit.

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic 650W 80+ Gold Certified Semi-Modular ATX Power Supply ($88.99 @ SuperBiiz)
Total: $88.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-02-04 04:50 EST-0500