Sudden Shut Downs Resulting: BlueScreen Error

[dvd6503]

Hello
I've updated my 64bit Windows Vista with 64bit Windows 7 Ultimate after which i've noticed that my computer would occasionally(at least once a day) shut down while being in sleep mode with following message:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: 9f
BCP1: 0000000000000003
BCP2: FFFFFA8005770060
BCP3: FFFFF80000B9C518
BCP4: FFFFFA80099D0010
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\021510-19843-01.dmp
C:\Users\Denis\AppData\Local\Temp\WER-145642-0.sysdata.xml

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If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

Please help me with this matter. Thanks a lot

Denis

PS I hope i've posted this thread in right section.

 

[usasma]

http://www.sevenforums.com/crash-lockup-debug-how/34900-1-novice-how-ask-help-bsod-problem.html