Try opening the excel worksheet in safe mode and check if the issue re-occurs.
Click on start> all programs >accessories>run>copy and paste the following command in the open box and press Enter.
If Excel safe works as expected, disable the add-ins:
- a) Click on File menu, click Options > Add-ins > Go button besides Manage: Com-Add-in.
- b) Check if there are add-ins listed, clear the checkbox to disable them.
- c) Close the Office program and restart it.
- d) Disable all the add-in, restart excel and repeat the above procedure if the issue is still there.
Try these solution, it is really very helpful. As it help you to find which add-in is causing the problem actually.