Wifi glitchy, requires 3x reset adaptor, won't find external USB HD, won't come out of sleep, requires 3x cold reboot, then standard reboot, then reset wifi adaptor, slow, an impossible machine. There's a reason these things are returned, no amount of 'refurbished' fixes them. (Wifi died again sending this review). Itliterally taxes over 15 mins to reboot!Update: The machine just died. It won't boot past the 'Welcome' screen, wasted hours trying to boot in safe mode, bootable media, etc, such a ghastly, awful machine, absolutely nothing but trouble. I shall not ever purchase another Dell product, new, used or refurbished, they break. I have no warrantee left, as is typical, they're probably sabotage or infected with some kind of bomb that goes off just after warrantee is over to try to get you to buy another.This seller, 'Refurbanana' has some nerve passing this off as a refurbished computer, it's been terrible from the start.