If mouse cursor keeps flashing or flickering in Excel, disable Hardware Graphics Acceleration. Here are some other fixes that will help you.

This post will show you how to get rid of White-cross Plus-sign mouse cursor in Excel. You need to check the Editing Options settings.

Excel grays out menu commands for unavailable features or functions. To unlock the grayed-out menus, first review the most common causes, then take the steps necessary make the menu active.