The Most Reliable PC? A MacBook.
The most reliable Windows laptop is… the mid-2012 13-inch MacBook Pro running Boot Camp, according to a report by PC management firm Soluto. Over the course of a three-month study, the MacBook Pro bested models from Acer, Dell, and others thanks to its superior construction and lack of the commonly preinstalled Windows “crapware” (to quote the report). It is the second most expensive machine in the top 10, cheaper only than the 15" MacBook Pro with Retina display that ranked 6th in reliability.
No surprise, I would venture a guess that OSX is more reliable than windows 7. Now if only Microsoft could spend their time improving their OS rather than hand ringing HTC for patent money on Google products; they might actually have a decent product