Chào bạn — bạn đang tìm thông tin của Windows 10! Chúng tôi đặt nội dung đó trong một vị trí mới. Hãy thử các liên kết sau:
Khóa sản phẩm là gì?
Cách tìm khóa sản phẩm cho Windows 10 của bạn
Để biết nội dung Windows 10 khác, hãy duyệt tìm các danh mục hàng đầu và chủ đề thịnh hành của chúng tôi.
If your Windows product key isn't valid, if you don't have a Windows product key, or if you've lost the product key that came with Windows, you'll need to buy a new one to activate Windows. To learn how to find your product key, see Where do I find my Windows 7 product key? For more information, see Windows 7 activation error: invalid product key.
You have 30 days after installing Windows to activate it online or by telephone. If this 30-day period expires before you complete activation, some Windows features will stop working until you activate your copy of Windows. For more information, see Activating Windows 7: frequently asked questions.
To obtain a new genuine Windows 7 product key, you'll need to buy an additional copy of the same edition of Windows 7, which contains a product key that you can use. For more information about how to get Windows 7 in your country or region, go to the Shop webpage. You can also purchase Windows 7 at retail locations.
If your Windows product key is not valid, if you don't have a Windows product key, or if you lost the product key that came with your copy of Windows, you'll need to buy a new one to activate Windows. You must activate Windows online or by phone within 30 days after installation to use every feature of Windows.
To get a product key, go to the Microsoft website.