My laptop is a Toshiba Portege running Windows 7 Ultimate, MS Office 2010. All updates to all products are current.
In explorer, pressing F2 should open the filename in an edit mode. In excel, it should open the cell in an edit mode. This is not happening.
F2 key itself is working ok - it works fine in other apps.
'Allow editing directly in cells' is checked in Excel.
This is a laptop, with no 'F Lock' key.
'SFC /SCANNOW' shows integrity is ok.