Guys am back again... and guess what?
My new motherboard died on monday morning.
Sunday evening, i placed the phone on charge only to wake up to see the phone not charging, no charging lights.
So i took out the battery re-inserted and it didnt power on.
It doesnt show up as QHSUSB_DLOAD either.
This is my last DHD. I am not going in for anothe DHD.
Are you sure if it's:
1) your battery good
2) your usb contacts are clean
3) any other problem because battery is not charging
Did you try to put in phone some other fully charged battery to see if it will work?