This is the cause of your BSOD
wdgcsflu.sys
Google comes up with nothing. Usually a sign of a name changing virus. I will get our security people to help out.

We have one of the best malware experts. She may not be online right now but you will be helped.

Hi neil67,
Please have this file C:\WINDOWS\System32\drivers\wdgcsflu.sys
scanned by VirusTotal - Free Online Virus, Malware and URL Scanner
You may need to show 'hidden files and folders' in order to click on it and upload it to be scanned.

From start, click Control Panel do the following:
1. Click on the Folder options, then View tab

2. Under the Hidden files and folders section select the radio button labeled Show hidden files and folders.
3. Remove the checkmark from the checkbox labeled Hide extensions for known file types.
4. Remove the checkmark from the checkbox labeled Hide protected operating system files.
5. Press the Apply button and then the OK button and shutdown My Computer.
6. Now Windows Vista is configured to show all hidden files.

Save the log information by copying and pasting it into note pad or directly in your next reply.

Thank You
Jacee

Download Combofix from any of the links below, and save it to your desktop.<--Important
Link 1
Link 2
Link 3

Click on this link Here to see a list of programs that should be disabled.
The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.
If your anti-virus or firewall complains, please allow this script to run as it is not malicious.
Next: Disconnect from the internet. If you are on Cable or DSL, unplug your computer from the modem.
Next: Please disable all onboard security programs (all running with back ground protection) as it may hinder the scanner from working.
This includes Antivirus, Firewall, and any Spyware scanners that run in the background.

• Double click combofix.exe and follow the prompts.
• When finished, it will produce a log for you. Post that log and a HiJackthis log in your next reply

Note: Do not mouseclick combofix's window while its running. That may cause it to stall
Please be patient while the scan runs, at times it may appear to stall.
When finished and after reboot (in case it asks to reboot), it should open a log, combofix.txt.
Post this log in your next reply together with a new hijackthislog.
After rebooting ensure your Security applications have been re-enabled.

In your next reply post:
ComboFix.txt
New HJT log taken after the above scan has run
***A guide and tutorial on "How to use Combofix" can be found here:
A guide and tutorial on using ComboFix

IF CF won't run:
During the download, rename Combofix.exe to sVchost.exe

Please download TFC by Old Timer TFC - Temp File Cleaner by OldTimer - Geeks to Go Forums and save it to your desktop.
Save any unsaved work. TFC will close ALL open programs including your browser!
Double-click on TFC.exe to run it. If you are using Vista/Windows 7 right-click on the file and choose Run As Administrator.
Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.


After rebooting,

• Download the latest version of Java Runtime Environment (JRE) 6.
• Scroll down to where it says "Java Runtime Environment (JRE) 6u25 allows end-users to run Java applications".
• Click the "Download" button to the right.
• Check the box that says: "Accept License Agreement".
• The page will refresh.
• Click on the link to download Windows Offline Installation with or without Multi-language and save to your desktop.
• Close any programs you may have running - especially your web browser.
• Go to Start > Control Panel double-click on Add/Remove programs and remove all older versions of Java.
• Check any item with Java Runtime Environment (JRE or J2SE) in the name.
• Click the Remove or Change/Remove button.
• Repeat as many times as necessary to remove each Java versions.
• Reboot your computer once all Java components are removed.
• Then from your desktop double-click on jre-6u25-windows-i586-p.exe to install the newest version.
• If offered to install a Toolbar, just uncheck the box before continuing unless you want it.
  The McAfee Security Scan Plus tool is installed by default unless you uncheck the McAfee installation box when updating Java.

Now, right click on HJT, to run as Administrator. Click 'Do a System Scan and Save logfile'.
The HJT log will open in notepad.
Copy and paste the HJT log from notepad in your next reply.