Windows 10 may have breathed new life into your PC, but it didn't do anything to juice PC sales this summer.<br />Both Gartner and IDC estimate that computer sales dropped several points year-over-year in the third quarter, right when the new Windows arrived.<br />As the analyst firms explain, Microsoft's fast-tracked release left many PC makers shipping existing systems with Windows 10, which weren't going to drive demand as much as brand new models.<br />The big question is whether or not the wave of new Windows 10 PCs launching this fall will make a difference - if there's still a sharp decline, the industry is really in trouble.<br />it's too soon to say if Windows 10 will stop the bleeding, but the days of booming computer businesses appear to be long gone.