Steven Sinofsky is stepping down as the head of Microsoft's (NASDAQ:MSFT) Windows department, and the reason behind it is completely understandable: he just didn't get along well with the executives. But the timing's going to hurt them. In this video, Motley Fool tech analyst Andrew Tonner tells us about the struggles facing Microsoft at the moment as the market shifts away from PCs and toward mobile, and how the company can go forward from here after the loss of a good chief operator.

Andrew Tonner owns shares of Apple. Eric Bleeker has no positions in the stocks mentioned above. The Motley Fool owns shares of Apple, Google, and Microsoft. Motley Fool newsletter services recommend Apple, Dell, Google, and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.