My Curve appears to be dead?

I didn't have it switched on for about a day or 2.
I went to switch it on today and it wouldn't turn on. I put it onto charge assuming the battery was dead. The LED light did not flash. After being on the charger for a few hours it still won't turn on.
I've taken the battery out and put it back in to try and reboot the phone but nothing happens.
Can anyone help please?

Obvious question: Is the charger plugged in?

Is there anything displayed on-screen? A battery symbol with a red line through it perhaps?

Are you using the original BlackBerry wall charger to charge? If not, please try that. Some USB ports will not correctly charge a BlackBery - especially when it is totally flat.

Ha, yes the charger is plugged in.
And the screen is completely blank.

I would try another charger or USB/PC connection with Desktop manager installed. Your charge may have died. Eliminate the simple things first.