My ASUS Transformer Book (2 in 1 Laptop/Tablet) will only charge when powered completely off. When it is plugged in, it charges DOWN very very slowly. I've been through 3 different charges and the same thing keeps happening. I've tried contacting ASUS to no avail, and I tried contacting Windows but they told me to talk to ASUS. It may be a hardware problem in which it needs to be evaluated and repaired, but I'm trying to avoid that at all costs considering it costs money. I'm hoping this is an internal problem that I can fix. But I need help.