Well well well. This is my 1st post here. I reg this forums 'coz I've found the solution for your problem and want to share it with you all!
Since I read the instruction of
Abhishek above and did exactly these steps, I found that the error appears due to a file called
msuwflvuc.exe, located in
C:\Users\[Your Account]\Local Settings\Temp. This might be a malware which is unknown but classified in "High risk level" by Norton Internet Security 2013.
NIS quarantines the file, while doesnot delete the concerned registry key. And I guess you're using an antivirus software that acting the same way as NIS. So the situation is, the registry key still exists while the executive file has been removed, and it makes the trouble! Let see how to deal with this sh!t.
1. Press Windows + R to run
Regedit
2. Follow the address:
[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows]
3. You will see the string called
Load, and its value is something like this: [...]
\LOCALS~1\Temp\msuwflvuc.exe
--> That's the root of the issue.
4. Make sure you have permission to edit the key, by clicking
menu Edit > Permissions..., then
tick the box
Full Control in the
Allow column > OK.
5. Just delete the string
Load you've seen in step 3.
Ta-da! Restart and enjoy!