Why can't I charge my AH0G wireless keyboard?

[MikeS4]

I have a brand new AH0G Envy wireless keyboard, part of a brand new 600-a010 Pavilion Wave desktop. When I first took the keyboard out of the box I plugged it in to charge, and managed to get a few hours of use out of it before the LED went out and it stopped working. Now when I turn the keyboard on, the LED illuminates for 1-2sec then goes out. It appears I'm unable to charge the keyboard.

The instructions say to charge the keyboard simply plug it into any USB charging port. I have tried it in at least 6 different USB charging ports on two different PCs and 2 different 'wall-wart' chargers, and left it plugged in overnight - all without success. All of the USB charging ports sucessfully charge orhter devices.

Is this brand new keyboard defective, or can I fix this?

[MikeS4 · Accepted solution]

What a Noob. I wrongly thought the white LED was an 'ON' indicator, and convinced myself that when it went out the keyboard had stopped working (I guess due to poor signal). In reality, the white LED appears to be a charging indicator, and it goes out when it's fully charged. So keyboard actually appears to be working fine.