BSOD when installingv8.563.2.1-090401a-079160C switchable graphics driver [ Edited ]

[yatin]

Every time I try to install the latest switchable graphics driver, I get the following error (a BSOD citing npfs.sys as a problem):

(The version of the driver I'm installing is: v8.563.2.1-090401a-079160C.)

I'm using a W500 with Vista Ultimate SP1 32 bit (product no. 4058-CTO)

Thanks for your help. (I've also run memtest86 and scanned with Symantec Endpoint Protection 11 with no errors found, and ran checkdisk.)

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Product
Windows

Problem
Shut down unexpectedly

Date
5/14/2009 11:57 PM

Status
Report Sent

Problem signature
Problem Event Name:    BlueScreen
OS Version:    6.0.6001.2.1.0.256.1
Locale ID:    1033

Files that help describe the problem (some files may no longer be available)
Mini051409-01.dmp
sysdata.xml
Version.txt

Extra information about the problem
BCCode:    1000008e
BCP1:    C0000005
BCP2:    995D71F7
BCP3:    D3137734
BCP4:    00000000
OS Version:    6_0_6001
Service Pack:    1_0
Product:    256_1
Server information:    3d930579-b244-4a1a-9362-671077f55ad0

Message Edited by yatin on 05-18-2009 01:36 PM

Message Edited by yatin on 05-19-2009 09:45 AM

Message Edited by yatin on 05-19-2009 09:45 AM

[yatin]

I think I've got a rough idea of what the problem is... I think my npfs.sys file has been replaced by something else that I installed. Would anyone be willing to email me as an attachment a copy of their npfs.sys file (It's in C:\windows\system32\drivers)... I'd need one from Vista SP1 32-bit (I think the XP and Vista files are different, or at least they have different MD5's)

(My email is ymirakhur [at] gmail.com)

Message Edited by yatin on 05-20-2009 12:35 PM