i have the 7100t and my battery meter was a question mark but now it just wont turn on...any ideas?

Wirelessly posted (8700g: BlackBerry8700/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)

Have you removed the battery and made sure it is inserted correctly? Are the battery contacts clean?

ya i even bought a new battery now it wont charge with my wall charger it will only charge through my computer and thats very slow at charging things lately

Try a new wall charger or switching the cables around and see if that works!