This article lists several solutions that may help improve your PC’s performance. We recommend trying all the listed solutions as multiple factors can contribute to slow performance.

On the device you’re projecting from, go to the screen mirroring settings (sometimes called cast settings), and select your PC to connect to it. If you’re projecting from a PC, you can also select …

If your PC has less than 4GB of memory, there are sometimes options for upgrading to get additional RAM. You may want to consult your PC manufacturer’s website or with a retailer to see if there are …

Running a firewall on each PC on your network can help control the spread of malicious software on your network and help protect your PCs when you're accessing the Internet.

Oct 14, 2025 · Learn how to use the PC Health Check app to help you improve your device performance.

If it's a hard disk drive, select Analyze if you want Windows to check the drive to see if it needs optimization, or select Optimize to have Windows run optimization on the drive.

Oct 14, 2025 · Resetting your PC in Windows is a powerful feature that allows you to restore your device to its original state, which can be useful whether you're experiencing performance issues, software …

When you search your PC after indexing, it looks at an index of terms to find results faster. When you first run indexing, it can take up to a couple hours to complete. After that, indexing will run in the …

To make sure your device can successfully update and that it runs its best, Windows reserves a portion of storage space on your device for use by temporary files, caches, and other files.

For example, it's faster to sort contacts by name than by a custom field. Select a folder that's taking a long time to open. Click the By: list and select the column heading that you want to sort by. For …