A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Method 1:
Start Excel in safe mode and verify whether issue re-occurs.
Click on Start and then Run, type ‘Excel /safe’ without quotes, and click OK
Note: There is a space between Excel and ‘/’
If Excel works as expected in safe mode, disable Excel add-ins and determine the problem causing add-in.
http://office.microsoft.com/en-us/help/enable-or-disable-add-ins-in-office-programs-HA010034127.aspx
Method 2:
Delete any files from Excel Startup folder from the following locations and see if it helps:
· C:\Program Files\Microsoft Office\Office12\XLStart
· C:\Documents and Settings\username\Application Data\Microsoft\Excel\XLStart, where username is your logon user name.
Note: Ensure to back up the files before clearing/deleting.