My HP Tablet PC tc1100 is NOT working. It does not turn on. It was working fine, then I left the PC, came back hours later, and I could not turn it on. The "on/off" switch was blinking, but it would not turn on. Also the "power source" button was blinking sometimes. Now, however, it does not even blink. I have run through basic troubleshooting steps as instructed by the HP help desk. I have a feeling this may be the power adapter because of the fact that I USE to at least get a blinking light, now its dead completely -- no blinking or any sign of life