atikmdag.sys BSOD on Gigabyte Radeon R9 270 OC GPU

GreenSpleen

Reputable
May 25, 2014
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I wasn't quick enough to see exactly what the bluescreen told me, but the minidump is blaming it on atikmdag.sys which may refer to my GPU driver which is up to date alongside the Catalyst Control Center at 14.4.

Potentially important context before I provide the minidump:

-I've owned my pc for just over a month with few detected problems.
-The one time this happened, it was a few hours after switching from a 1280 x 1024 VGA connected monitor to a 1920 x 1080 DVI Dual-link connected monitor.
-The very instant it happened was when I paused a 30-song grooveshark playlist and then unpaused- causing a terrible noise (may have been stuttering) then a crash to the BSOD. I do know grooveshark relies on Flash which is known for crashing the browser. (but not the whole pc)
-I think I may have had Left 4 Dead 2 alt + tabbed to the background as well.
-Yes, I can use google. But there are many troubleshooting options for this fairly popular problem, leading me to want help narrowing them down.
-The most popular option seems to be http://www.computertipsfree.com/fix-43029-atikmdag-sys-blue-screen-bsod-in-windows-7/. However, I don't know which atikmdag.sys driver he is referring to, as I seem to have two different drivers of that name. One of which is the much larger kernel mode driver and then another, smaller atikmdag.sys. If you can determine which one I need to work with, I can go the route of that link.
-I recently overclocked my gpu core clock from 975 MHz to 1050 and the memory clock from 1400 MHz to 1500 MHz after having been led to believe it would be stable without altering voltage or power limit. Using Heaven and HWinfo for hours, even on the new monitor, showed no dangerous changes in the CPU, GPU core, and GPU vrm temperatures. So it shouldn't be a matter of overheating.

Without further ado:

https://onedrive.live.com/redir?resid=B524B95907B936D6!107&authkey=!AGvCgK06LEKREro&ithint=file%2c.dmp (COPY WHOLE LINK)

and here's this:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF880111A4DBB
BCP3: FFFFF880053E4228
BCP4: FFFFF880053E3A80
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\052414-18922-01.dmp
C:\Users\Sam\AppData\Local\Temp\WER-47299-0.sysdata.xml

Motherboard: ASUS M5A99FX PRO R2.0
CPU: AMD FX-6300 Vishera 3.5GHz
RAM: G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3
PSU: CORSAIR CXM series CX600M 600W ATX12V v2.3
Monitor: BenQ GW2255 with driver updated through Windows 7 64 bit Ultimate

Thank you very much in advance.