If your computer is showing a black or blank screen in Windows, these troubleshooting tips could help get your system back up and running.

If you purchased a Microsoft 365 subscription from a third-party retailer instead of the Microsoft Store, contact the third-party retailer directly to manage your subscription and billing.

Learn how to view, manage, and delete cookies in Microsoft Edge.

Install Office 2007. Insert your Office 2007 CD into the drive. If the setup wizard doesn’t start automatically, navigate to the CD drive and click SETUP.EXE. When prompted, enter the product key. You can find the product key on the sticker on the CD case or other packaging. If you need help, see Find your Product Key for Office 2007.

Learn how to uninstall a Windows update, if for example that update is causing your system to have errors or other problems.

Tip: You can also use the scroll wheel on your mouse to resize desktop icons. On the desktop, press and hold Ctrl while you scroll the wheel to make icons larger or smaller. For information on how to show or hide individual Windows icons, see Find the Recycle Bin.

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.

Manage drive space with Storage Sense. Storage Sense can automatically free up drive space for you by getting rid of items that you don't need, like temporary files and items in your Recycle Bin. Here’s more info on how it works and how to set it up to meet your needs.

Add an app to run automatically at startup in Windows 10. Select the Start button and scroll to find the app you want to run at startup. 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 ...

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.