How to Reinstall Windows 8.1
Part 1 of 2:
Reinstalling Windows 8 First
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Get your Windows 8 CD installer. The CD either came with your PC or was bought separately. Put it inside the CD/DVD drive of your computer. -
Restart your computer. -
Access the BIOS. Press the Delete, F1, or F2 button on your keyboard, depending on the type of BIOS your computer is using. -
Boot from CD/DVD drive. Inside the BIOS, set the boot settings so your computer will boot from the CD/DVD drive first. -
Save the changes made on the BIOS. Wait for your computer to restart. -
Press any buttons on the keyboard to proceed. A prompt will notify you to 'Press any key to boot from CD or DVD.' -
Follow the setup instructions to install Windows 8.
Part 2 of 2:
Reinstalling Windows 8.1 Update
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Connect your computer to the Internet. Your PC needs to have an active network connection. -
Go to "Settings." Move your mouse cursor to the lower right of the screen (or swipe to the left if you're using a touch screen), and select 'Settings.' -
Select 'Change PC Settings.' -
Select 'Update and Recovery.' -
Choose 'Windows Update.' -
Look for and select 'KB 2919355' from the list of downloadable updates. -
Download and install the update. Restart your computer when prompted.
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