If the system does not automatically prompt for an upgrade Win8.1 how to manually upgrade

Solution:

When you are officially purchased the original or the hands already have Windows 8.1 ISO disc image files. This document will take you step-by-step through a disc (mirroring) installation to upgrade to Windows 8.1. The CD-ROM image can be obtained from a Microsoft MSDN Subscription account or a TechNet subscription account or a Third-party Web site.

The test hardware for this document is the Lenovo IdeaPad Y400 notebook, hardware configuration for Intel I5 3210M, 4G memory, 1TB hard drive, and the test ISO CD-ROM image file is downloaded for the Microsoft MSDN Subscription account. All of the following test screens and tests are measured for this hardware platform for reference only.

Specific installation upgrade method can refer to the following steps. Due to the system's upgrade installation, may cause computer settings, data changes or loss, we recommend that you do a good job of personal data backup before the actual operation.

1. Double-click the left mouse button to select the required decompression of the ISO CD image to the folder;

2. Open the newly unpacked folder and double-click the "Setup" program in the folder;

3. Pop-up user Account Control, click "Yes";

4. Start initialization of the program, please wait a moment;

5. First click "No, thank you", then click "Next";

6. Enter the 25-digit product key, click Next;

7. First tick "I accept the license terms", and then click the "Accept" button;

8. Select "Keep Windows settings, personal files, and Applications" by default, and then click Next.

9. Please wait a moment;

10. Click "Install";

11. Wait for installation, this process lasts about 6 minutes;

12. The computer starts to restart, the whole process restarts 4 times, approximately lasts 24 minutes;

13. Click "Use Quick setting";

14. In the login account interface, you can either choose to log in with a Microsoft account (the account is a registered Microsoft Personal e-mail address), or you may choose to log in with a local account. If you do not have a Microsoft account or just want to use a local account, click Create a new account.

15. Then click "Continue to use my existing account";

16. The computer appears "Hello" in turn, wait a moment;

17. The screen will display a color background, complete the remaining application installation, the process lasts about 4 minutes;

18. This Windows 8.1 upgrade installation is complete.