Mouse wheel does not work in Excel 2007
1) I went to Start, Control Panel, Mouse, Wheel and clicked on "Office 97 Emulation".
2) Open an Excel file / Click on "Office Button" located on the top left corner / Click on
"Excel options" button / Choose "Advanced" / Look for "Zoom on roll with IntelliMouse"
then uncheck that option / Click "OK"
The formula bar in Excel 2007 has become a multiline field and Microsoft has opted to allow the scroll wheel to scroll through the formula bar instead of through the spreadsheet.
One way to fix this is to turn off Universal Scrolling for the Excel application. Follow the instructions below to turn off Universal Scrolling for Excel:
Click on your Start button.
Click on Control Panel.
Double-click your Mouse icon.
Click on the Wheel tab at the top.
Click on the Exceptions button.
Click on the Add button
Under Application Name, type Excel.
Click on the Browse button and locate the Excel application on your machine. For Excel 2007, this is typically:
C:\Program Files\Microsoft Office\Office12\Excel.EXE
Double-click on the Excel application executable or highlight it and click the Open button.
Click OK all the way out.
Reopen Excel and test the changes.