This is definitely not the right forum for your issue. However, the fix here is fairly simple.
Can you compare the length of the your ear piece's male connector compared to a standard 3.5mm audio jack? Some units designed for mobile are extra long and will not fit in ports that do not accept voice inputs. If that is not the case and your male connector is the standard size, please move on to the next step.
Within Device Manager, select "Sound, video and game controllers". On the PC I am currently using, my standard output for headphones via the audio jack is "Conexant SmartAudio HD". Your device name may be different, but right click on the correct driver and uninstall it. Reboot your computer, and Windows will automatically reinstall the driver for you.
If that doesn't resolve the issue, you will need to contact your local ASUS service center for a repair, as it is most likely a hardware problem.
