1: Wrong letter or no letter while typing

         1.1: Press FN+INS buttons for a try.

                1.1.1: Problem solved. --> Accidentally turned on the number pad.

                1.1.2: Problem persists. --> Check whether problem can be solved by deleting the virus.

                           1.1.2.1: Problem solved. --> Virus issue.

                           1.1.2.2: Problem persists. --> Reinstall the OS for a try.

                                         1.1.2.2.1: Problem solved. --> Operation System problem.

                                         1.1.2.2.2: Problem Persists --> Contact ASUS service center for help.

2: Hot key malfunction.

2.1: Reinstall the ATK drivers/utilities

                 2.1.1: Problem solved. --> Drivers issue.

                 2.1.2: Problem persists. --> 1.1.2.2