Here is a really weird one. I have some large spreadsheets. Some include VBA macros that I have written. In some of my files I will press any key, perhaps the "+" sign and an image from elsewhere in the spreadsheet, typically an entire different sheet, will super-impose itself over the sheet I am working on. It isn't really there and if I do something like Page Down and then Page Up or Unfreeze the pane, the image usually goes away. Sometimes, some of the image will stay. It is really a pain. I have worked at least 100 hours with MSFT including taking the computer to a local MSFT store. They have been zero help. I have replaced my computer with a new top-of-the line computer, so that means new hardware, new operating system, new installation of Office 2013. I am running Windows 8.1. The problem remains. As I see it the problem either lies in Excel or perhaps a macro (although I am not running a macro when that happens). The problem is not in just one sheet, it happens intermittently in any sheet. Three of the most often afflicted are 440KB, 1.25MB and 3.28MB in size. Wizards, any ideas?