Out of 6 ThinkPads from the "pro" tiers that I've had, none of them failed at all and all of them worked fine for much longer than that, except from one whose screen failed after 3 years or so (ThinkPads had a bad quality period around the Vista era, then recovered much of the lost quality, although if they fall from a height they probably no longer end up fine while denting the ground like my 2005 ThinkPad did. By the way, in fact that ThinkPad, from 2005, still works, except that obviously it has almost no battery, doesn't support the latest Windows and is slow with current bloated software and websites).