BSOD BCCode: 7a

Greetings, I've recently built a new gaming PC and I got the ram, cpu and motherboard in a bundle from overclockers. Everything seemed fine at first but after a few hours I started getting a BSOD, seemingly at random, I can be playing a game for hours before it happens or it will happen whilst I'm browsing. This is the event log:

Problem signature:

Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 2057

Additional information about the problem:
BCCode: 7a
BCP1: FFFFF6FC8060D7E0
BCP2: FFFFFFFFC000000E
BCP3: 00000000AC395880
BCP4: FFFFF900C1AFC01C
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

The minidumps are in the attachment. Any help would be greatly appreciated!

SysInfo: Tech Support Guy System Info Utility version 1.0.0.2

OS Version: Microsoft Windows 7 Ultimate, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz, Intel64 Family 6 Model 60 Stepping 3
Processor Count: 4
RAM: 8148 Mb
Graphics Card: NVIDIA GeForce GTX 650, 1024 Mb
Hard Drives: C: Total - 476837 MB, Free - 243245 MB;
Motherboard: Gigabyte Technology Co., Ltd., Z87-D3HP-CF
Antivirus: Norton Internet Security, Updated and Enabled

Attached Files

072213-51230-01.zip (50.0 KB)