X5 cranks but won't turn over-Help!

[jasondlyman]

Hey folks!
So my 2006 X5 3.0 wouldn't start on Monday. It would crank but would not turnover. I tried to jump it yesterday with no luck. I took out the battery and took it to Autozone. They verified that the battery was bad so I bought a new one and popped it in hoping I was done with this problem. Got in to start it and it's still cranking but will not turn all the way over. It almost does but then just won't turn over. Any ideas on what this could be? Is it the starter? I'm pretty clueless when it comes to maintenance on cars so any ideas/tips/help would be greatly appreciated. Thanks!!!