Blackberry Touch 1 wont come up

My Blackberry Touch 1 hanged so I decide to do a battery reset, I put the battery on and it blinks red light and goes off after 6 seconds the red lite will come back and stay for few seconds and goes off again. I used my battery in other phones and it worked , so I know its not a battery problem.

Now when I connect it via USB(laptop) it shows the battery icon with the charge sign and in 2 seconds it start loading, when it shows the blackberry logo it does not load it just goes off.

Please can anybody kindly help me out on wat is wrong with phone? I have gone to several engineers but no solutions, I need the contacts in the phone very badly.

Jide.

You might have to do a OS refresh/install via the BB manager or link. Have you tried to see if the software recognizes the device?