Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Waste of money

When I plugged this into my computer and turned it on, it caused my computer to reboot by itself every 12 minutes or so. I tried everything to find out what was causing that to happen and how to fix it to no avail. I still haven't figured out why it kept shutting down and restarting my Mac and now I'm S.O.L. because I can't return it to Amazon without the styrofoam packing material that came inside the box (which I threw out)- a dumb rule. A complete waste of my money. If you have a Mac OS X, don't waste your time or money like I did!