phone is on, but screen won't light up.

[zachjones]

for about 5 hours now, my phone screen won't light up. i can only see it if i hold it at the right angle in a lot of light. and even then i can't do anything, all i can make out is the clock on the lock screen, and the calendar widget once i feel it vibrate once i unlock it. i have the motorola, completely stock. any answers? the last thing i remember doing was changing the brightness from the powerbar widget while i was outside. i have a feeling it's something with that.