Note: If it’s been fewer than 10 days since you upgraded to Windows 10, your previous version of Windows will be listed as a system file you can delete.If you need to free up drive space, you can delete it, but keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Troubleshoot problems with Bluetooth accessories. If you can turn on Bluetooth but having problems pairing or using a Bluetooth accessory, try the following steps to try to fix common problems with Bluetooth accessories.

Turn your PC off completely. To shut down, select Start and then select Power > Shut down.. Sleep. Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.

Right-click the app, select More, and then select Open file location.This opens the location where the shortcut to the app is saved. If there isn't an option for Open file location, it means the app can't run at startup.

Important: you should limit the number of administrators on your Windows device because administrators have complete control over the system.Administrators can change settings, install software, and access all files. If too many people have this level of access, it could lead to security risks like malware installation or unwanted changes to your system.

In quick settings: To find the quick setting for Bluetooth, select the Network, Sound, or Battery icons ( ) next to the time and date on the right side of your taskbar.Select Bluetooth to turn it on. If it's turned on without any Bluetooth devices connected, it might appear as Not connected . If you don't see Bluetooth in quick settings, you might need to add it.

Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web).

We want to hear from you! Please continue to share your feedback with us — either in the Google Play Store, directly in the Phone Link and Link to Windows apps, or at the bottom of this article.

Learn how to access the Control Panel in Windows for managing your system settings and programs.