This problem is well documented on hp discussion boeards. The problem with it not charging can be bad cable, bad male connection on the touchpad, or bad battery. After tryinall ticks to hold combo buons for 60 seconds and purchasin new chargr ulit direct from HP, my last option is trying the battery. I will keep you posted. It is just out of warrantee and HP wants close to $400 to repair. I asked them about a possible recall and communication went silent.
I will keep you posted