Windows 7 ntoskrnl.exe Blue Screen

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.
BugCheck A, {fffffa801d05f090, 2, 0, fffff8000312af9f}
Probably caused by : [U][B]memory_corruption[/B][/U] ( nt!MiIdentifyPfn+23f )
Followup: MachineOwner
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2: kd> !analyze -v
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*                        Bugcheck Analysis                                    *
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[U][B]IRQL_NOT_LESS_OR_EQUAL[/B][/U] (a)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high.  [U][B]This is usually
caused by drivers using improper addresses[/B][/U].