Hello guys, one of my friends was trying to install the cyanogen for first time but after flashing 2.2 it stucked in M logo! and the buttery is unknown ( there is a question mark on the battery logo when he plugs in the charger). he tryed to flash some other ROMs (official 2.2 and other 2.2) but every time there is same problem and just M logo!!! 
what can he do? please help... i will really appreciate your help!
what can he do? please help... i will really appreciate your help!