Hello MementoMori34,
No where did I see mention of you doing the SFC /scannow in your post.
I would try it again 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:
KB article 929833 -How to use the System File Checker tool to troubleshoot missing or corrupted system
files on Windows Vista or on Windows
You also stated this just started happening. Do you have a system restore point that you can restore to when the Guitar Hero 3 Control Panel was working?
To choose a System Restore point,
· From the Desktop click the Pearl (start) button
· In the Search Field type “System Restore” and hit enter
· Once System Restore is open, select the option “choose a different restore point” and hit next
Once on the next screen, pick a restore point to go back to when it last worked for you. Once you select the restore point, click next, then select finish, this will start the restore process.
Hope this helps.
Sincerely,
Marilyn
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think