Blackberry 9000 not turning on?(Red cross and loading bar)?

[seanyboy21e]

Hey my blackberry bold 9000 won't start. It comes up with the loading screen as if it is about to start then when it reaches about 5-10% through the bar it changes to a battery with a red cross through it and a loading bar underneath that reaches to about 70% and just stops. Have tried a different battery and same problem. Also tried to reinstall the software but it can never finish because the last step of the upgrade it attempts to turn the phone on and mine wont turn on.

I gave the phone a smack and I have tried dropping it and nothing but I gave it a smack a few minutes ago and know I get a red led then it turns on and a battery with a lighting bolt appears (Charging) then within about 15-20 seconds it changes to a battery with a cross through it. Any help would be much appreciated, thanks!