ipad 2 keeps crashing

I just purchased a refurbushed ipad 2 and it came 5 days ago. Days 1-3 were perfect. All of a sudden I went to plug it in to charge it Night 3 and Day 4 I woke up and it wouldnt come on. So i pressed the home and power button until i saw the apple logo and it got stuck on the apple logo screen!!! After unplugging it and playing with a combo of those 2 buttons, I finally got it to turn back on. It will be fine for like 3 hours and then it would shut back off again. I thought it was chrome that caused it to crash because it would happen while i was using it, so i uninstalled chrome. it was fine for the rest of the night last night. I use my ipad for my bible at church so i went to charge it last night and this morning, i woke up to the same thing! Can someone please offer any suggestions as to what is wrong, how to fix it, or did I just get a refurb dud from apple???