Unexpected shutdown - Bluescreen

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I hope somebody can help me!!!!

I have a Hp a6040a with Vista Ultimate installed and am finding that I am

getting an unexpected shutdown occuring 2-3 times per day. I continously

click the check for solutions button but it doesn't seem to be helping at

all......Can somebodyy assist me please:

 

The details I receive are as follows:

 

Problem signature:

Problem Event Name: BlueScreen

OS Version: 6.0.6000.2.0.0.256.1

Locale ID: 3081

 

Additional information about the problem:

BCCode: 50

BCP1: F8686B10

BCP2: 00000001

BCP3: 820E7610

BCP4: 00000002

OS Version: 6_0_6000

Service Pack: 0_0

Product: 256_1

 

Files that help describe the problem:

C:\Windows\Minidump\Mini102007-06.dmp

C:\Users\PC01\AppData\Local\Temp\WER-41699-0.sysdata.xml

C:\Users\PC01\AppData\Local\Temp\WERAD8D.tmp.version.txt

 

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