If your arrow keys are not working in Excel, there are a few simple ways to troubleshoot and solve this problem. The most common solution is to turn off Scroll Lock. If you don't have a Scroll Lock ...
Windows only: Tiny application NumLocker disables the Caps, Num, and Scroll Lock keys from an easy-access menu in the system tray. Using the application is simple enough—just right-click on the tray ...