Keys on keyboard stuck right off the bat; mouse quit working after 5 minutes. So I used another keyboard and mouse to set up the PC. It seemed to be going OK until I downloaded Chrome - then it just hung there. Nothing would get it to move on, so I shut off the power, waited a few minutes and turned it back on. It made a horrible grinding noise and the power light kept coming on and off, but nothing ever appeared on the screen. I tried turning it off and on again, but the same thing happened.  So, I'm returning it for a refund.  Have purchased a more expensive unit, but hopefully it will actually work.