BlueScreen multiple times since installing SP1

CPU: AMD Opteron 8224 HE
Motherboard: ECS Nettle2 1.0 MCP61PM-HM
RAM: 240 pin, DDR2 SDRAM PC2-5300 MB/sec 667MHz 1024x2
GPU: NVIDIA GeForce 6150SE nForce 430
PSU: Bestec ATX-250-12Z
OS: Windows Vista Home Premium SP1 64-bit

I have just purchased a new Desktop System and installed Vista Home Premium 64-bit.
I made all of the necessary preps and updates needed before installing SP1 and everything went smooth, but shortly thereafter and ever since my system has been shutting down unexpectedly. When I start it back up it tells me that Windows has recovered from an unexpected shutdown and when I check to see what the problem details are I am giving the following information.

Product
Windows

Problem
Shut down unexpectedly

Date
4/14/2008 9:47 AM

Status
Report Sent

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)
Mini041408-01.dmp
sysdata.xml
Version.txt

Extra information about the problem
BCCode: d1
BCP1: 0000000000000000
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFFA60009EE23E
OS Version: 6_0_6001
Service Pack: 1_0
Product: 768_1
Server information: bccfd43b-eb9f-45c8-853d-ce824da22a71


I have installed the Windows Debugger and debugging symbols so that I could attempt to read the minidump files and try to diagnose what is causing this issue, but I was unsuccessful in getting the debugger to work correctly.

Can someone please read the minidump files that I have attached and tell me what is causing this BlueScreen event and what I need to do to fix the issue.

Thanks,
naystcb

See if you can update nvstor.sys, which is an NVIDIA nForce(TM) SATA Driver.

BugCheck D1, {0, 2, 0, fffffa60009ee23e}
Probably caused by : nvstor.sys ( nvstor+623e )
Image name: nvstor.sys Timestamp: Thu Jun 07 04:34:00 2007 (46671A38)

Thank you peterdiva, I have followed your advice and updated the NVIDIA nForce driver as you suggested. Can you advise me on one more issue and how to resolve it? I was able to read one of my older minidump files and it gave me this issue,
Probably caused by : win32k.sys ( win32k+c96c5 ). Do you know what this issue is and how I can resolve it?

Thanks,
naystcb