Hi there, my Atrix HD will not come on. I'm not a very tech-savvy person so I'll explain the best I can: I was using it and it froze up. Thought I could power it off and back on to set it straight, but now I'm thinking that was a bad move. It never came back on. I've tried plugging it in overnight to make sure the battery wasn't drained but no luck. Gave it a day to see if it might come back on its own and still nothing. Looked up how to reboot it, but it's not working. The only sign of life I get is when I'm holding the power/volume down I get a blinking green light at the top but it stops when I do. Any suggestions?