My Excel is weird

[Democrazy]

Office Version:Office 2007Operating System:Windows XP
I have a few spreadsheets open in Excel 2007. I will do a few things in the program and all of a sudden it starts beeping. A little white box will appear in the top left corner and randomly beep. Looking at Task Manager, Excel.exe is opened twice. I can close one of the instances, but it will come back and beep again. I checked the Accessibility Options and nothing is turned on. I have tried to uninstall 2007 to reinstall, but refuses. Any other ideas would be very helpful.

[Matthew]

Try opening excel in safe mode and then try auto fill and check if it works
1. click on start
2. click on all programs >accessories
3. run
4. type “excel /safe”(without quotes)
Note: there is a space between excel and “/”