OH NO... so I just recently got this tx2z and I love it everything has been running amazing on this machine. Last night, the pen stopped working! I check the pen and input settings and everything is on. The touch function still works, but the pen doesn't work at all. I haven't dropped it or anything to make it quit on me. But I do recall that when I took the pen out of its slot it was little "warm". So I got on the phone with HP. Anyhow, I'm posting a thread just in case anyone has this problem. I searched everywhere and seems like tx2z "pretty new machine" there hasn't been any posting on the pen not working. I only had this computer for a month an half or two. So right now I pulled out the pen and it WORKS! Then 1 minute later, it doesn't work. Does anyone know anything about this pen? I don't think it charges in the computer when stored in the slot because it's "battery less". Any information would be great and very helpful for future pen malfunctions that people may come across on the tx2z. Thanks...