Why can't I change my screensaver?

I get this message when I try to change my screen saver, set the resolution of the screen and change the theme in personalization in Control Panel. "Windows cannot find 'C:\Windows\system32\rundll32.exe '. "How to do that work again?

Hello

-Did you change your computer, after which the question began?

I suggest that you follow these steps and check to see if they help.

Step 1:

Run a full scan using the Microsoft Safety Scanner as I suspect that this could be a piece of malicious software.

Note: You may lose the infected all data by eliminating malware.

Step 2:
 
Do SFC scan and check if the problem related to the integrity of system files.

If you are using Windows XP, follow the steps in this article.
http://support.Microsoft.com/kb/812340

Tags: Windows

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