i upgrade my system from window genuine  8 to window 10 technical preview version..problem is that i didn't take a back of my win 8.1 i want to roll back my system to window 8.1..i tried to reset my pc but nothing happened..after resetting again it is showing window 10.. 

Question Info

Last updated April 21, 2020 Views 39,348 Applies to:

Did Windows 8.1 come preinstalled on your system or did you upgrade from a previous version of Windows to Windows 8.1?

If you upgraded from a previous version of Windows, you will have to do reinstall using your Windows 8/8.1 disc.

Boot from the Windows 8/8.1 DVD
Click Install Now
Accept License Agreement
When the option is displayed to select an installation type, click (Custom Advanced)

select the disk partition where you would like to install Windows 8 Click Next.

You will receive the following warning:

The partition you selected might contain files from a previous Windows Installation. If it does, these files and folders will be moved to a folder named Windows.old. You will be able to access the information in Windows.old, but you will be able to use your previous version of Windows.

(At all cost, do NOT click anything named Format or Delete or Partition. So even doing a custom install, your personal files are still preserved. Click OK

Setup will now start the installation. During the installation, your machine will be restarted several times.

When the installation is complete, you can complete the Out of Box experience such as selecting your laptop, create a username, password, your time zone. You can then proceed to download the latest updates for Windows and reinstall your applications and drivers.

You can then recover your personal files from the Windows.old folder and reinstall all your applications and drivers.

If Windows 8.1 came preinstalled, you will have to use the recovery partition or request recovery media from the manufacturer of your computer and use that to reinstall Windows 8.

New computers that come preinstalled with Windows 8 often have what is called a recovery partition. This is used to reinstall the operating system in the event of a system crash. To access it, you will need to boot into when you start your computer by pressing a function key. This can be either F1, F2, F9, F10, F11, F12 or even DEL or Tab key. Consult the owners manual that came with your PC for instructions about how to reinstall Windows.

This is how the recovery partition is accessed for the most popular makes..

For Dell, press F8 on the keyboard until the Advanced Boot Options menu appears on the screen.

For HP, press F11 directly after powering up the unit

For LG, press F11 directly after powering up the unit

For Toshiba, press and hold '0' BEFORE and during the power up

For Acer, press and hold ALT + F10 as soon as you see the logo

For Asus, press F9 as soon as you see the Asus logo.

For Samsung, press F4 at power up..

For Fujitsu, press the F8 key repeatedly directly after powering up

For Advent, restart your computer. Then Press F10 repeatedly until the message "Starting System Recovery" is displayed

For Sony VAIO, restart and press "F8" or "F10" repeatedly until the "Advanced Boot Options" screen appears.

If your recovery partition is not available or damaged, you should contact the manufacturer of your computer and request a recovery disc set you can use to reinstall Windows 8. They might charge a small shipping and handling fee.


1-888-678-3688 or






Gateway 1-866-539-3901










Acer 1-866-539-3901

Windows Insider MVP
MVP-Windows and Devices for IT

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