Alright, GPU driver rolled back, seems stable now I suppose. However, upon shutdown, I got this BSOD:
==================================================
Dump File : 011214-17300-01.dmp
Crash Time : 1/12/2014 6:15:47 PM
Bug Check String : SYSTEM_PTE_MISUSE
Bug Check Code : 0x000000da
Parameter 1 : 00000000`00000504
Parameter 2 : fffff6fc`4006bc88
Parameter 3 : 00000000`00000020
Parameter 4 : 00000000`0000d791
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+75bc0
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18247 (win7sp1_gdr.130828-1532)
Processor : x64
Crash Address : ntoskrnl.exe+75bc0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\011214-17300-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 275,760
Dump File Time : 1/12/2014 6:16:37 PM
==================================================
Also did a memory test with no faults.