Symptom 5:

In most cases, you need to use the correct key combination to clear the macros. If the keyboard has a REMAP key, press it first (a Program light or other LED will start blinking). Press the CTRL key twice to map the key to itself. Press AL T twice to map the key to itself. Press the SUSPEND MACRO key (the Program light should stop blinking). Press the CTRL and AL T keys while pressing SUSPEND MACRO. This will clear all of the keyboard's programming. The key sequence used for your keyboard may be different, so be sure to check the procedure for your own keyboard. If problem still persists, replace the ' keyboard.