Go to the Windows 7 Service Pack 1 download page on the Microsoft website. Select the Download link that corresponds to your version of Windows 7. Select each of the download links and save them to your PC. When you're ready to install SP1, run the .exe file you downloaded from the site. Then follow the instructions to install SP1.

从设备中删除Windows Hello和任何关联的生物识别数据. 转到 “开始 > 设置” > 帐户 > 登录选项 。. 选择要删除Windows Hello方法。. 选择“ 删除”。. 你的生物识别数据将保留在你的设备上，直到你将其删除。. 但是，在长时间Windows Hello处于非活动状态后，系统会提示 ...

You might also see a notification in Settings to let you know the requirements are not met. If you're experiencing issues after upgrading to Windows 11 and your device does not meet the minimum system requirements, we recommend you go back to Windows 10. To go back to Windows 10, select Start > Settings > System > Recovery > Go back .

Check the Xbox services, games, and apps for any service outages.

Troubleshoot unrequested verification codes. Note: If you're still not receiving verification codes, you may have to choose another method, or wait until you can access the phone or email you've listed. To protect your account and its contents, our support agents are not allowed to send verification codes or access and change account details.

Note: Offers vary by country.Be sure to redeem your rewards points in the same region you signed up in. Do not use a VPN while trying to redeem points. When redeeming points, use a mobile or landline phone number for authentication and not a VoIP phone number.

若要启用或禁用 DRR，请：. 选择 “开始 > 设置 > 系统 > 显示 > 高级显示 ”。. 在 “选择刷新率 ”旁边，选择“ 动态 ”选项。. ( 注意 ：此选项仅在支持的硬件上可用。. 如果未看到 “动态” 选项，则硬件不支持 DRR.) 如果要禁用 DRR 并使用固定刷新率，可以从 ...

Energy saver automatically manages system processes and power usage for an optimal balance of PC performance and longer battery life. Select Start > Settings > System > Power & battery .If you want energy saver to turn on whenever the battery falls below a certain level, select Energy saver to expand options, then next to Turn energy saver on when battery level is at, select the battery level ...

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Get help with a damaged or unreadable code. If you’re unable to read all 25 characters of your digital code, you’ll need to request a replacement code by contacting aka.ms/contactxboxsupport. When you contact support, make sure to provide the proof of purchase, the serial number, and a picture of the damaged code.