Godz - PC Build

Godz PC Build List:

CPU: Intel Core i7-4790K Processor - Quad Core, @ 4.0GHz, 8MB Cache
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Motherboard: EVGA 152-HW-E878-KR LGA 1150 Intel Z87 Classified SATA Motherboard
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Operating System: Windows 8 Pro 64-Bit
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RAM: DDR3 - CORSAIR Vengeance 16GB (2 x 8GB) 2133MHz
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GPU: DDR5 - EVGA GeForce GTX 960 SuperSC 2GB
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PSU: Viotek Standard ATX 140MM Fan 850W Modular Power Supply W/ 20 - 24pin SLI Ready
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Storage: Crucial M4 256GB SSD & 3TB 64MB Cache SATA 6.0Gb/s 3.5" Desktop Hard Drive
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Case: Thor V2 Full ATX Black/Red
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Current Issue(s):
- The PC seems to have a freezing issue im unsure why, its been running fine but since i bought GTAV its had freezing issues. Freezes when i just browse the web, when i play games, when i stream... Unknown Reason!