worst purchase ever for work. I spent over 2,000 on this machine. Never worked, has tons of capacity that I paid for with no possible use. Does not turn on or off, freezes, will not connect to Internet, no matter what I do. It is under warranty, but the customer service will not do anything, just keep telling me do this or that and then it might work for a day, then starts all over again. Useless loss of 2000 dollars. My boss gave me a 200 dollar Samsung to use that works 1000 percent better than this lenovo. I emailed and called company and got NO help.