Links

RegClean

Method 1:

Uninstall RegClean program from the control panel and check.

Refer to the link.

Uninstall or change a program

http://windows.microsoft.com/en-US/windows7/Uninstall-or-change-a-program

 

Method 2:

Run the Microsoft fixit from the link.

Fix problems with programs that can’t be installed or uninstalled

http://support.microsoft.com/mats/Program_Install_and_Uninstall/

 

Method 3:

I would suggest you to download and run the latest Microsoft Safety Scanner on your computer and check if it helps:

http://www.microsoft.com/security/scanner/en-us/default.aspx

Note: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.

 

Method 4:

Let’s test the issue in safe mode.

Refer to the link.

http://windows.microsoft.com/en-us/windows7/start-your-computer-in-safe-mode

 

If it works fine in safe mode, perform clean boot.

http://support.microsoft.com/kb/929135

NOTE: After troubleshooting, revert the computer to start as usual (Refer to “Step 7” from the link mentioned above)

 

 

Reference Link:

http://windows.microsoft.com/en-us/windows7/Are-registry-cleaners-necessary