Fix your audio drivers. Hardware problems can be caused by outdated or malfunctioning drivers. Make sure your audio driver is up to date and update it if needed. If that doesn't work, try uninstalling the audio driver (it will reinstall automatically).

Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.

Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. When you get a message that says Windows can't be activated, there are several possible reasons why.

Using the Xbox Accessories thumbstick recalibration tool. If you're experiencing minor issues with the thumbsticks on your controller, or if you are performing a self-repair of your controller and need to recalibrate the thumbsticks, you can use a self-calibration tool in the Xbox Accessories app.

When your camera isn't working in Windows 11, it might be missing drivers after a recent update. It's also possible that your antivirus program is blocking the camera, your privacy settings don't allow camera access for some apps, or there's a problem with the app you want to use.

Select a different account. You have multiple accounts. Choose the account you want to sign in with. Manage your subscription. Outlook.comMore... Less. You can view or renew your subscriptions at account.microsoft.com. Learn more.

You see the following error code when you try to use a feature on the Xbox network: 0x80072F8F. This may mean that there's an issue with your connection to the Xbox service. Typically, this is a transient error.

If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.

下面是如何分别构造 AND 、 OR 和 NOT 函数的概述。. 当将它们分别与 IF 语句组合使用时，应按如下方式表达：. AND – =IF (AND (Something is True, Something else is True), Value if True, Value if False) OR – =IF (OR (Something is True, Something else is True), Value if True, Value if False)

TPM 2.0 is used in Windows 11 for a number of features, including Windows Hello for identity protection and BitLocker for data protection. In some cases, PCs that are capable of running TPM 2.0 are not set up to do so. If you are considering upgrading to Windows 11, check to ensure TPM 2.0 is enabled on your device.