Simply plugging the keyboard in will allow it to type, but advanced features require the software.
The driver service is not running, or the keyboard is in BIOS mode. Fix: Press Fn + Pause for 5 seconds to reset the keyboard. Uninstall the driver, reboot, and reinstall. a4tech gk-85 driver download
: Place 2 AAA batteries into the keyboard and 1 AA battery into the accompanying mouse. Connect Receiver Simply plugging the keyboard in will allow it
A4Tech GK-85 (often part of the GK-85 Wireless Keyboard & Mouse Combo a4tech gk-85 driver download