Thanks for the quick response. It's moderately new, so there is not that much important data yet. I backed up files I needed. Should I go to Best Buy or Dell to replace the hard drive?
If you got it from BestBuy two weeks ago, take it there.
Did you create the Restore disks when you first got it? If not...they will either sell it to you as part of the drive replacement, or just replace the bare drive and send you on your way.