Battery stopping bootup

I have a 15.4" MBP 2.2 which has been fine since i got it (besides a display issue) and now suddenly i cannot boot up my MacBook Pro without removing my battery and connecting the power.
Is there any reason behind this?
One of the things to note is i mainly use XP Pro on this, however the whole machine fails to get past POST and will cut the power.
Serials upon request.

I think there's only a small chance it would work, but you might try an SMC reset:
If the computer is on, turn it off.
Disconnect the AC Adapter and remove the computer's battery.
Press and hold down the power button for 5 seconds and then release the button.
Reconnect the battery and AC Adapter.
Press the Power button to restart the computer.
If that doesn't work, and you're reasonably close to an Apple Store or authorized service center, I'd take the machine in. There's something wrong with either the battery or the charge/power management circuitry in the computer.
If no service facility handy, call AppleCare and advise them of the issue and what you've tried.

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