I believe my Evo 4G has become hard-bricked. It will not turn on when plugged into computer or wall, I have tried several batteries, no lights flash, it does not vibrate, I have tried plugging into computer and putting battery in while hold vol up and down buttons, and have tried the power button+vol down button. I had lost the phone for a few weeks and found it in a sweatshirt pocket of mine that I did not wear often and once I found it, it would not do anything. I have never rooted my phone or anything like that, just used it to text and play games. I have read that the only way to truly hard-brick your evo 4g is to pull the batter out while flashing the radio or something like that and I'm not even sure what that means. Any help or suggestions are appreciated! thank you!