Hi,
Have you made any changes to the computer prior to this issue?
I would suggest you to try the following threads and check if it helps.
Method 1:
Try to re register ‘MSWINSCN.OCX’ and check if it helps.
Follow the steps to reregister the ‘MSWINSCN.OCX’:
a. Click Start, type “command” in the start search box.
b. From the program list right click cmd.exe, and click on Run as administrator.
c. Type “regsvr32.exe mswinsck.ocx” Without quotes and hit Enter.
The normal location of file is C:\Windows\System32.
Method 2:
Run System File Checker Tool scan and check if it helps.
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7:http://support.microsoft.com/kb/929833
Also follow the steps given in this link by “Bruno Yu” dated “Monday, June 18, 2007 8:41 AM”
http://social.msdn.microsoft.com/forums/en-US/vbinterop/thread/da74ada5-194a-4690-9b91-ff269936e54e/
Hope the information is helpful.