Hello MementoMori34,
Sorry you are having a difficult time getting your issue resolved.
Are you still having errors with your Guitar Hero 3 Control Panel add-on?
You might try a SFC /scannow to see if you have any corrupt system files.
Click Start
Open an elevated command prompt.
To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
At the command prompt, type the following command, and then press ENTER:
SFC /scannow
This will check for any integrity violations and fix any corrupted operating system files.
Then reboot your system.
Please refer to Knowledge base (KB) article if you find corrupt files:
Sincerely,
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
If this doesn't help, you might need to do a In-Place upgrade of Windows Vista to repair your system.
Please reply back with an update.
Marilyn
Microsoft Answers Support Engineer
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