make sure its charged good, then turn on your 3100. after it boots up, hold the power button for ten seconds, when it turns off, turn it back on.
that should work, but if it doesnt, hook your usb up to it and your computer and see if the computer can see your 3100. if it can, go
HERE and download the 2.18 update and that should fix it.
NOTE: read the directions entirely and do not unplug the unit until the Update wizard instructs you to do so.
either plug it in to the wall charger or make sure the battery is fully charged.
unplugging or losing power while updating will render the unit inoperable!
be patient, this update takes about 30-45 minutes to install..its 1.76GB
if you need further help, let me know by replying to this post.
bill