|Have you tried doing a Repair?|
Select Control Panel
Select Uninstall Program
Select the MS Office program, DO NOT double click, simply select the program.
At the top of the screen, a "Repair" option should appear.
See if that helps.
Also, try running Excel in Safe Mode:
In the Open box, type: Excel.exe /s
Safe Mode bypasses any Add-Ins, among other things, that may be causing problems.
If just using Excel /s does not work, you may need to use the complete path, something like:
C:\Program Files\Microsoft Office\Office\Excel.exe /s
Then open your problem workbook, if there a no problems, then you know it's one of your Add-Ins is the culprit.