Windows 10 didn't stop PC sales from dropping this summer
 

Windows 10 may have breathed new life into your PC, but it didn't do anything to juice PC sales this summer. Both Gartner and IDC estimate that computer sales dropped several points year-over-year (between 7.7 and 10.8 percent) in the third quarter...

http://www.engadget.com/2015/10/10/p...op-in-q3-2015/