PC not getting to the User Log On Screen

[evilfantasy]

Download Vundofix to your desktop.

Important! If using Windows Vista be sure to Run As Administrator

• Double-click VundoFix.exe to run it.
  
• Put a check next to Run VundoFix as a task.
  
• You will receive a message saying vundofix will close and re-open in a minute or less. Click OK
  
• When VundoFix re-opens, click the Scan for Vundo button.
  
• Once it's done scanning, click the Remove Vundo button.
  
• You will receive a prompt asking if you want to remove the files, click YES
  
• Once you click yes, your desktop will go blank as it starts removing Vundo.
• When completed, it will prompt that it will shutdown your computer, click OK.
  
• Turn your computer back on.
• Please post the contents of C:\vundofix.txt in your next reply.
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Note: It is possible that VundoFix encountered a file it could not remove. In this case, VundoFix will run on reboot, simply follow the above instructions starting from "Click the Scan for Vundo button" when VundoFix appears at reboot.

If you receive this error: "Run-time error '339': Component 'comdlg32.ocx' or one its dependencies not correctly registered: a file is missing or invalid", a new copy and instructions on where to put it can be found here

Please let VundoFix finish, sometimes it can take multiple passes

[Collins]

After the Vundofix scan was completed I got the message "Done Searching for files. No infected files were found".

[evilfantasy]

This scanner works with Internet Explorer only!

Scan with the BitDefender Online Scanner
Click I Agree to the license and then install the ActiveX control.
Please DO NOT change the Scanning Options.
That will make your logs huge and we don't need to see clean files.
Select Start Scan to begin.
This scan can take a while so please be patient and let it complete.

Once BitDefender completes the scan:
Click-on the Detected Problems tab.
Then select Click here to export the scan report



This will save a file named bdscan.html I would suggest saving it to the Desktop so you can easily find it. (take notice of where you save it so you can find it later)
 
You will have to upload the file online. The forums will not accept HTML.

Go to File Dropper

Click Upload
Locate the file and double click it.
Copy the download link and post it back here.