Help for blue screen

Somebody help me, I am really tired to solve my problem.
I got blue screen

Problem signature
Problem Event Name: BlueScreen
OS Version: 6.0.6001.2.1.0.768.3
Locale ID: 1033

Files that help describe the problem (some files may no longer be available)
Mini030809-01.dmp
sysdata.xml
Version.txt

View a temporary copy of these files
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Extra information about the problem
BCCode: d1
BCP1: 83C1D000
BCP2: 00000002
BCP3: 00000000
BCP4: 89FD9082
OS Version: 6_0_6001
Service Pack: 1_0
Product: 768_1
Server information: 3ff7e558-86a3-4afa-bb32-595232aa1e05

This is my system information
S Name Microsoft® Windows Vista™ Home Premium
Version 6.0.6001 Service Pack 1 Build 6001
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name VANSONDA-PC
System Manufacturer Hewlett-Packard
System Model HP Pavilion dv6000 (GA384UA#ABA)
System Type X86-based PC
Processor Genuine Intel(R) CPU T2080 @ 1.73GHz, 1733 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Hewlett-Packard F.2D, 11/26/2008
SMBIOS Version 2.4
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "6.0.6001.18000"
User Name Vansonda-PC\Vansonda
Time Zone Central Daylight Time
Installed Physical Memory (RAM) 1.00 GB
Total Physical Memory 0.99 GB
Available Physical Memory 439 MB
Total Virtual Memory 2.24 GB
Available Virtual Memory 1.36 GB
Page File Space 1.28 GB
Page File C:\pagefile.sys

This problem makes me cannot use windows update and updates my anti-virus.
I use Bit Defender Total Security 2009

Your error is 0xD1 and these are almost always caused by faulty drivers but the information you supplied doesn't supply that information. I have a few questions:

1. Can you scan with BitDefender or is that blocked from doing so as well?

2. Can you run in Safe Mode?

3. Can you access the internet and if so what has that experience been like?

Also, please attach your five latest minidumps in your next post.

How to find your Minidump Files:

My Computer > C Drive > Windows Folder > Minidump Folder > Minidump Files.

It is these files that we need (not the folder). Attach to your next post. Notice the Manage Attachments button at the bottom when you go to post the next time. You can Zip up to five files per Zip. Please do us a favor and don’t Zip each one individually.

1. I can scan with BitDefender, but there are several files that cannot be scanned because it needs a password.
2. I can run Safe Mode with or without networking
3. I can access the internet, but i takes little bit time and freezing to connect the internet. Sometimes I got blue screen while using internet or playing Warcraft III.
I just found 1 minidump in the minidump files folder. I have attached the file.