IRQL_NOT_LESS_OR_EQUAL Windows 7 - Blue Screen

I keep getting an IRQL_NOT_LESS_OR_EQUAL blue screen when I boot Windows normally. I have tried uninstalling and reinstalling audio and video drivers, attempted a system restore, and used diagnostic startup to turn off anything that I could imagine interfering. I don't get the name of the interfering driver like some other IRQL errors seem to get on this board, but I do have my dump files and system xml. Can anyone help me identify the problem?

Problem signature:

Problem Event Name: BlueScreen

OS Version: 6.1.7601.2.1.0.256.48

Locale ID: 1033

Additional information about the problem:

BCCode: a

BCP1: 0000000000000000

BCP2: 0000000000000002

BCP3: 0000000000000001

BCP4: FFFFF8000368DC3F

OS Version: 6_1_7601

Service Pack: 1_0

Product: 256_1

Link to dump files/system.xml: http://tdoxey1.securesites.net/winhelp/

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