Check out http://support.microsoft.com/kb/973904

After getting to the website, FIRST see if there is a disclaimer at the top of the page before doing anything else.
The disclaimer may read something like this:

System Tip
This article applies to a different version of Windows than the one you are using. Content in this article may not be relevant to you.Visit the Windows 7 Solution Center.

At the bottom of the page, there is a list of Operating systems this fix applies to.

There is a Fix it button that presumably one would just click on to make the corrections and for the more adventurous, there is a Fix it myself button.

I would create a restore point FIRST or better yet, a good backup of my C: drive and then I’d give it a try.

APPLIES TO
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional Edition
Microsoft Windows 2000 Server
Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
Microsoft Windows Server 2003, Standard Edition (32-bit x86)
Microsoft Windows Server 2003, Datacenter x64 Edition
Microsoft Windows Server 2003, Enterprise x64 Edition
Microsoft Windows Server 2003, Standard x64 Edition
Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
Microsoft Windows XP Professional x64 Edition