NEED HELP WITH PM G5

Hello,

I have a PM G5. I transferred many of my photos & music to an external HD to free up space for upgrading software.

As soon as I did this I restarted my computer. However, my computer never fully came back on. The monitor actually

comes on with apple symbol and spinning circle but the circle just continues to turn.

I left it on all night thinking that perhaps it needed time to related to the fact I took so many files off, but it never came

back on.

Do anyone know what I can do.

Thank you,

Love,

Rochelle