To some, the Windows Registry is as scary as it gets. They've heard rumors of a miniscule change causing unrecoverable havoc in Windows!
While the right small change might cause big problems, simple things like backing up your work prior to making changes and being careful are about all the protections you need to take.
That's not to say the Windows Registry isn't complicated - it is - but the tutorials and other how-to's below should ease your concerns:
How To Open Registry Editor
Instructions on opening the Registry Editor program in any version of Windows.
How To Delete the UpperFilters and LowerFilters Registry Values
Instructions on removing the UpperFilters and LowerFilters values from the Windows Registry.
Step by Step Guide to Deleting the UpperFilters and LowerFilters Registry Values
A step by step guide to deleting the UpperFilters and LowerFilters registry values, a possible solution to several Device Manager error codes.
Where Can I Download a Free Registry Cleaner?
Free registry cleaner programs really do exist. Many pretend to be free but later charge to clean the registry. See my list of completely free registry cleaner software programs.
How To Find a User's Security Identifier in Windows
A tutorial on determining the SID for any user account in Windows.