RunDLL Error The specified module could not be found.

Hello,
For a while it seems like I have some DLL file errors. For two days it started to appear on my windows startup and is. Nothing happens when I OK them but still. Can anyone help me please to fix these errors? Why I have this errors and should I reinstall my Windows?
Thanks!

RunDLL
Error loading C:Windowssystem32wvUlIYrO.dll
The specified module could not be found.
OK

RunDLL
Error loading E:Program Files (Vista)Movie Makerwmm2clip.dll
The specified module could not be found.
OK
