Microsoft is caught in the ultimate good news/bad news syndrome: Windows 8.1 will likely fix Windows 8's woes, but PC sales will still take a nose dive. So says two recent Gartner reports, and they may well be right.Windows 8.1 is a winner, but PC sales will plummet, says Gartner | Computerworld BlogsThe report makes one thing perfectly clear: For the next several years at least, Microsoft's glory days are behind it. Once it essentially monopolised personal computing. Today and for the next several years, it's struggling to hold onto a 15% market share. Windows 8 clearly isn't going to help that, and has likely hurt. For a big change, we may have to wait until Windows 9.