|You could try opening in SAFE mode:|
Type in: "C:\Program Files\Microsoft Office\Office\Excel.exe" /s
See if you get the corruption while in safe mode.
What Safe Mode does is:
Forces Excel to bypass all files in the Application Data\Microsoft\Xlstart folder,
the default XLStart folder located in the directory where Excel or Office is installed,
and the alternate startup file location specified on the General tab of the Excel
Options dialog box.
It also forces Excel to bypass the toolbar file (Excel.xlb or <username>.xlb).
You should see "Safe Mode" in the title bar.
You can also try a REPAIR
First open a new instance of Excel,
Then on the File menu, click Open.
In the Open dialog box, select the file you want to open,
and click the arrow next to the Open button.
Click Open and Repair, and then choose which method you want to use to recover your workbook.
You can also try saving them in a different format, like SYLK or HTML.
You may loose some formatting info, but hopefully you'll get your data.
Next time, ask your question in a new thread, helps keep things tidy.