Your battery needs 'some' charge in it before it gets detected and used by your laptop. Remove the battery, press and hold the power button for 20 seconds to remove and static energy and then connect the adapter and power on your laptop without the battery. Now when the laptop is running, insert the battery (don't worry, it's not dangerous). Now your battery will get detected and start charging. Reason for this happening: Your laptop adapter powers your laptop+charges a low power battery. Unless it detects the battery (which it doesn't when it's at 0%) it doesn't charge it.
When I connect an external microphone to the jack, it is not working. I can see it in the "Sound" tab, but the levels is very low. I have tried with several microphones.
I kept getting the blue screen with Driver Power State Failure error message and then my computer would restart. I found your product and it did not happen any more. I just purchased an anti-virus (kaspersky) and now it is doing it again. It is so frustrating. My computer is only 6 months old. It is a Asus desktop.