dell wireless keyboard

keyboard has quit displaying the underscore when I type, it is always hyphen, all other keys work correctly, it is not set for all caps.

Is that the kit that includes the mouse and keyboard? The Caps Lock does not affect the _/- or =/+ keys nor any of the other keys on that row. Could be the keyboard has gone bad. If you like the mouse you can get a different make or model wireless keyboard to use without interfering with the mouse, the USB dongles don't usually mix with others.

changed batteries, pulled usb, turned off keyboard, all is good, thanks