Thread: Booting issue?

I've tried searching the forum, it may be that I didn't use the right words, but I couldn't find an answer.

I bought a new battery for my phone, as it had totally gone, and when I got it in the post today, I switched the phone on and... the only things that happened were the screen lit up, the buttons lit up and the phone vibrated. Aside from that, nothing. The screen is still black. Is my phone basically screwed?