All of a sudden when i put my computer to sleep or shutdown i see the shutting down loading screen and then boom it goes to a BSOD.

I got a vista 64bit

I couldn't get the BSOD message but when i start up the computer it gave me an error log which says:

Product
Windows

Problem
Shut down unexpectedly

Date
10/05/2009 5:18 PM

Status
Not Reported

Problem signature
Problem Event Name: BlueScreen
OS Version: 6.0.6001.2.1.0.256.1
Locale ID: 4105

Files that help describe the problem (some files may no longer be available)
Mini051009-02.dmp
sysdata.xml
Version.txt

Extra information about the problem
BCCode: 1000007e
BCP1: FFFFFFFFC0000005
BCP2: FFFFFA6004B7F709
BCP3: FFFFFA60005E4878
BCP4: FFFFFA60005E4250
OS Version: 6_0_6001
Service Pack: 1_0
Product: 256_1

Your error 0x0000007E: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
A system thread generated an exception which the error handler did not catch. There are numerous individual causes for this problem, including hardware incompatibility, a faulty device driver or system service, or some software issues. Check Event Viewer (EventVwr.msc) for additional information.

As you can tell this is a very broad error. If you choose to go Event Viewer check for Red X's and make note of where and what they are.

Windows will also make a minidump file out of your BSODs that is stored in the Minidump Folder which is placed in the Windows File. You can attach them on your next post.