The Lenovo has a sweet feature – poor chassis grounding!
It does not happen too often but you can be working along and decide to change position or get a drink of water. You decide to move your laptop on to or off your lap and touch the VGA port on the left side of the machine. BAM. You get either A). A minor shock or B). The screen turns to fuzz and the system powers off instantly. With that said, it is a workhorse that is specified (with the w520) across huge segments of the market (so says our IT consultant).