1. Click the Start menu, find and click Windows Anytime Upgrade in the list, find and enter the upgrade key in the pop-up interface and click;
2. After clicking, there will be a prompt to enter the upgrade key, such as: 6K2KY-BFH24-PJW6W-9GK29-TMPWP, then click Next, after clicking, it will verify whether the key is correct；
3. If the verification is successful, [Please accept the license terms] will appear, and click I accept. If it is unsuccessful, search for the key again on the Internet until it succeeds. After success, a dialog box will pop up, save all current work and close all open programs, click Upgrade；
4. The upgrade takes about ten minutes, and the computer will restart three times during the upgrade process. Remember not to touch the computer, it can move by itself. Finally, after the upgrade is successful, you can experience the 64-bit Windows7 Professional Edition.