I've had this device for less than 2 months and I probably got someone's used piece of crap. Acer couldn't find the S/N. I came in to a black screen, but the power light was on. Had to power it off, since the screen didn't come on. It then forced me to change my Gmail password, only to demand the old one after I did. Once back in noticed all my files are gone. After over an hour of time wasted, and three clueless technicians, I still have no clue wtf happened; I assume I'll get a warranty replacement, but honestly I no longer trust Acer; who wants an electronic device that deletes itself at will? If I could leave 0 stars I would. I certainly won't trust this seller again.