I've got a desktop, and have no problems installing 8.1 (the Technet/MSDN .iso is readily available online for anyone who wants it badly enough to Bing/Google it and download it)...;) I'm absolutely amazed that anyone alive is still running 8.0, just like I was surprised to see people running Windows 7 without updates and service packs--just so they wouldn't have to pay for it, I suppose, as in order to successfully update Win7/8 a valid, authorized
install must first be detected. I also have few problems with 3d-card drivers, although I have had a few.
But the people I feel sorry for are the people who buy laptops but for some reason also want to use them as their primary gaming platforms. Bad move, that. I certainly cannot recommend it. Laptops are designed primarily to be portable business platforms, whereas desktops are not only ideal for all types of business, but are much better platforms for gaming
Desktops for the most part, especially if you build your own Win8.1x64 box, are much closer than laptops in supporting the hardware and software standards
that all 3d games require. Laptops often deviate from those standards in various ways that make them poor platforms for gaming in general. In every game forum I visit, the great majority of problem reports come from laptop owners. Also, even AMD's mobile Catalysts only support a few brands of laptops directly--the rest of the laptops require the laptop OEM to release 3d drivers because of their custom designs, etc.
If you want as close to problem-free gaming as it is possible to get with today's technology, be sure and settle for nothing less than a desktop
as your primary gaming platform, imo (30 years
of opinion, more or less...;)).
It is well known that I cannot err--and so, if you should happen across an error in anything I have written you can be absolutely sure that *I* did not write it!...;)