6265i Help!

This just started today- As I turn my phone on, It stays on for about 20 seconds, but while it's on, it just shows a white screen with the little battery at the top left. After that 20 seconds, the backlight goes dim and i't shuts off. It's fully charged, and I even tried taking the battery out, putting it back in. When I do that then turn it back on, it asks me the time. I can't even press any button to change the time, then it turns off. Is there anything I can do, or should I just take it in tomorrow?

Thanks!

hey man i have the same dam problem .. i turn it on its even plugged in .. it stays white .. goes dim ... does that a few times .. the wallpaper shows up but no menu or ne thing and goes dim ... the wallpaper only SOMTIMES shows up its rare.. i always tried removing the batt. and other stuff .. this is the second time its happend, the first time it did this i just kept trying and it worked... not this time wut do i do ?