Lets see if you have a corrupt file.
Please run SFC (System File Checker)
Please run System File Checker sfc /scannow
... For more information on this tool see [url="http://www.bleepingcomputer.com/forums/topic43051.html"]How To Use Sfc.exe To Repair System Files
NOTE for Vista/WIN 7 users..The command needs to be run from an [url="http://www.bleepingcomputer.com/tutorials/tutorial167.html"]Elevated Command Prompt
.Click Start, type cmd
into the Start/Search box,
in the list above and select 'Run as Administrator
You will need your operating system CD handy.
Open Windows Task Manager....by pressing CTRL+SHIFT+ESC
Then click File
.. then New Task(Run)
In the box that opens type sfc /scannow
......There is a space between c and /
Let it run and insert the CD when asked.