Microsoft Excel 2010 - Formula work causing errors

Standalone Windows 7 machines giving errors when working with formula.

Attachment 9706

Happening on any Toshiba T130 Windows 7 machine, apart from bad install of Office any ideas?

Office 2010 Pro Plus - genuine copy.

Sorry for very little info but not much to go on!

Could be having issues with the C:\documents and settings area.
Try it with a local administrator account?