Had the HP 520 for 18 months and the 1TB Seagate hard drive is shedding magnetic surface and will die soon according to the SMART data! Why oh why did they put a Seagate hard drive in this amazing machine? Going to clone to a Hitachi before the Seagate dies. Of course we switched off the touch screen and plugged in a wired mouse and wired keyboard. The Intel processor coupled with 3.5" hard drive gives a very fast performance. Into and out of Sleep takes only a few seconds. The screen is glossy which is bad. Very reflective. A matt screen would be so much better. But for the money this is very good value and to be recommended.
[for £40 you can get a Hitachi hard drive and clone the unreliable Seagate].