check this Post #367 by chastan1
latest update will enabling the internet sharing.

I think my HD7 is dying, battery life suck to max, off everything (wifi, data, location) and switch on battery saver, standby time also about 10 hours. If on wifi and data, and do some phone calls and sms, the battery can finish within 2 hours. I have hard reset it and changed the battery, the result also the same.
And another more serious thing, the phone cannot restart, once turn it off and want to turn it on, it cannot load windows, the screen appears one phone needs connect to PC, like the screen when updating the phone. I have to keep turn off and turn on again and after many many times, only it can load the OS.
Anyone faced these problems before?

thinking to upgrade my hd7

dont know wat phone to aim

coz this phone is rock
still working like champs
n no hang at all lol