To change the desktop background in Windows, you can follow these steps:

1. Right-Click on Desktop: Click on an empty area of your desktop with the right mouse button. This will open a context menu.
2. Choose “Personalize”: From the context menu, select “Personalize.” This will open the Personalization settings.
3. Select “Background”: In the left sidebar of the Personalization settings, click on “Background.”
4. Choose a Background: Under “Background,” you can select a new desktop background. Windows provides several options:
   • Picture: You can select a picture from your computer’s library or browse for one.
   • Solid Color: Choose a solid color as your desktop background.
   • Slideshow: Set up a slideshow with multiple pictures cycling as your background. You can configure the slideshow settings here.
   • Browse: If you want to use your own image as a background, click “Browse” to locate and select it.
5. Adjust Picture Position: You can also choose how the picture should be positioned on your desktop under “Choose a fit.” Options typically include “Fill,” “Fit,” “Stretch,” “Tile,” and “Center.” The best choice depends on the aspect ratio of your image and your personal preference.
6. Save Your Changes: Once you’ve selected your preferred background and settings, click the “Save changes” button.

In Windows, you can disable Windows Updates temporarily by stopping the Windows Update service. Here’s how you can do it:

Note: It’s generally not recommended to disable Windows Updates for an extended period, as updates often contain important security and stability fixes. Only disable them temporarily if you have a specific reason, like preventing updates during a critical task.

Using Services:

1. Press Win + R: Simultaneously press the Windows key and the R key on your keyboard to open the Run dialog.
2. Type “services.msc”: In the Run dialog, type “services.msc” (without quotes) and press Enter. This opens the Services window.
3. Find “Windows Update”: In the Services window, scroll down or use the alphabetical order to locate “Windows Update.”
4. Stop the Service: Right-click on “Windows Update” and select “Stop” from the context menu. This stops the Windows Update service temporarily.

Now, Windows Updates are disabled until you manually restart the service.

To re-enable Windows Updates:

1. Follow the same steps to open the Services window.
2. Find “Windows Update” again.
3. Right-click on “Windows Update” and select “Start” from the context menu. This restarts the Windows Update service, and updates will resume downloading and installing.

Remember to re-enable Windows Updates and keep your system up to date for security and performance reasons.

Resetting Windows to its factory settings can be a drastic step, so make sure to back up your important data before proceeding. The exact steps may vary slightly depending on your version of Windows, but here are general instructions for resetting Windows to factory settings:

For Windows 10:

1. Backup Your Data: Before resetting, make sure to back up any important files and data to an external drive or cloud storage.
2. Access Settings:
   • Click the “Start” button and select the gear-shaped “Settings” icon (or press “Windows key + I”).
3. Go to Update & Security:
   • In the Settings window, select “Update & Security.”
4. Choose Recovery:
   • In the Update & Security window, select “Recovery” from the left sidebar.
5. Reset This PC:
   • Under the “Reset this PC” section, click the “Get started” button.
6. Choose an Option:
   • You’ll be presented with two options:
     • “Keep my files”: Removes apps and settings, but keeps your personal files.
     • “Remove everything”: Removes all your personal files, apps, and settings.
   • Select the appropriate option based on your needs.
7. Confirm Your Choice:
   • Follow the on-screen instructions, and Windows will guide you through the reset process. You may need to confirm your choice one more time.
8. Complete the Reset:
   • The computer will restart and begin the reset process, which may take some time. Follow the on-screen instructions to finish the process.

For Windows 8.1:

1. Backup Your Data: Ensure all your important files and data are backed up to an external drive or cloud storage.
2. Access PC Settings:
   • Swipe in from the right edge of the screen (or move your mouse to the lower-right corner) to open the Charms bar.
   • Click on “Settings,” then “Change PC settings.”
3. Choose Update and Recovery:
   • In the PC settings, select “Update and recovery.”
4. Access Recovery:
   • In the Update and recovery window, select “Recovery” from the left sidebar.
5. Remove Everything and Reinstall Windows:
   • Under “Remove everything and reinstall Windows,” click the “Get started” button.
6. Confirm Your Choice:
   • Follow the on-screen instructions. You may need to confirm your choice one more time.
7. Complete the Reset:
   • The computer will restart and begin the reset process, which may take some time. Follow the on-screen instructions to finish the process.

For Windows 7:

1. Backup Your Data: Ensure all your important files and data are backed up to an external drive or cloud storage.
2. Access System Recovery Options:
   • Restart your computer.
   • Press the appropriate key (usually F8) to access the Advanced Boot Options menu.
3. Choose Repair Your Computer:
   • Select “Repair your computer” from the menu.
4. Select a System Restore Point (Optional):
   • If you want to restore your computer to a previous state, you can choose a system restore point. Otherwise, proceed to the next step.
5. Choose Restore to Factory Settings:
   • Select “Dell Factory Image Restore,” “Toshiba HDD Recovery,” or a similar option, depending on your computer manufacturer.
6. Follow the On-Screen Instructions:
   • Follow the on-screen instructions to reset your computer to its factory settings.