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Laptop will not connect

Medium Priority
Last Modified: 2012-05-06
Around 7 days ago my Dell laptop 'blue screened' about 4 times. Its automatic disk check came up with a few corrupted files and then it stabilised itself.  At first I thought the hard disk was giving up (the motherboard was replaced about a month ago) but it hasn't crashed since.
Since then it :1 Numerous "the application failed to initialize properly (0xc0000142)" errors on startup
2 Hangs on certain tasks. eg. extracting Windows debug symbol file, defragmenting
3 Will not connect to internet either over wireless or network card
4 Will not connected to Aventail VPN 'Access denied' message
5  tells me that my user account does not have admin rights even though it is listed correctly under User accounts.  I had to use the local (no domain) 'Operations' account to run windbg and regcure

I have :
1 Disbabled and removed 'Integrity client' firewall software
2 Decrypted hard disk (It was encrypted with Encyption Plus)
3 Clean-up hard disk
4 Run a full disk check
5 Run a full virus scan using NAV
6 Run Regcure to remove any corrupt registry entries
7 Run Malwarebytes
8 Run windbg on mindump files .. original crash caused by pwd_2k.sys
9 Examined event log .. lots of error 481/485/489 "an attempt to delete c:\windows\softwaredistribution\datastore\logs\edbtmp.log failed" I don't use Exchange !!

Please help .. I am having to lug round a desktop and a flat screen until I can fix this !!

Watch Question

re-seat the memory in the computer.
I would also try to do hardware diagnostic scans - memory and hard drive - to see if any fail.  if they fail, replace the parts.  A pass doesn't mean that it might not be having problems.

I would also consider doing a repair install of XP (not from the command line).  

1. Download all updated driver from Dell web site again
2. reinstall windows with the latest drivers

I have many experience that the stock driver of Dell machines are too old to run stable.
The hard disk was replaced after ghosting the contents.  No need to re-insatll all my apps !!
All the problems I mentioed above were solved.  
I suspect it was some low level disk corruption.

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