M$解釋升級可能移除部分軟體...
Microsoft explains what you’ll lose by upgrading to Windows 10
https://www.microsoft.com/en-us/win...-specifications
Feature deprecation section

Media Center掰了, 無所謂完全用不到
If you have Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate, Windows 8 Pro with Media Center, or Windows 8.1 Pro with Media Center and you install Windows 10, Windows Media Center will be removed.
DVD播放功能也掰了，無所謂反正我每年都買PowerDVD
Watching DVDs requires separate playback software
Windows 7 desktop gadgets will be removed as part of installing Windows 10.
家用版用戶的更新是自動的，專業版及企業版用戶可以選擇推遲更新
Windows 10 Home users will have updates from Windows Update automatically available. Windows 10 Pro and Windows 10 Enterprise users will have the ability to defer updates.
接龍，踩地雷跟傷心紙牌遊戲都掰了，不過可以去下載WIN10版裝回去
Solitaire, Minesweeper, and Hearts Games that come pre-installed on Windows 7 will be removed as part of installing the Windows 10 upgrade. Microsoft has released our version of Solitaire and Minesweeper called the “Microsoft Solitaire Collection” and “Microsoft Minesweeper.”
如果你現在還在用USB軟碟機的話，你需要取得最新驅動
If you have a USB floppy drive, you will need to download the latest driver from Windows Update or from the manufacturer's website.
如果你還有Windows Live Essentials的話(這玩意不是已經跟MSN Messenger隨風而逝了嗎?)， OneDrive會被新版取代
If you have Windows Live Essentials installed on your system, the OneDrive application is removed and replaced with the inbox version of OneDrive.