Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DOA ouch!

My unit arived with screws loose and one screw missing. When I pluged it in to my computer it gave an error c10. It kept cutting in and out on my computer trying to open a usb channel but never showed up as a drive on my computer. When I tried to find a mfgr website for advice, I could not find Cavalry! I now must return the unit.My advice stay away from companys without websites.