I bought this once and it was a total dud: didn't start up and the PC gave 'warning beeps' -> identified as a RAM issue. Attempted to reseat/clean RAM, but problem persisted. Returned it via amazon and bought another one in hopes that it was just damaged from shipping.Second arrived and thankfully turns on fine, however, the included wifi USB does not work. it keeps cycling on/off every 10 seconds. I downloaded/installed the latest drivers (using a temp LAN connection), and the wifi still does not work.Buying my own wifi adapter and hopefully this resolves the issue. Seems like the computer works fine otherwise... (here's to hoping!)