How to Re-install windows 7 using the recovery partition from a windows 8 upgraded machine

Hi there,

I have a machine with a windows 7 OEM operating system. I have upgraded it to windows 8 pro. My concern is that, how can I re-install windows 7 back using the recovery partition. I don't have a disc. I tried to use function keys such as F8, F11, F12 however it seems that its not working,

Any help would be appreciated.


Which model brand machine are you using?


New computers that come preinstalled with Windows 7 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 CTRL + F11 directly after powering up the unit

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 the recovery partition is damaged, you can do the following:


Download the corresponding edition of Windows 7 you have a license for from the following link. You can identify the edition on COA sticker attached to your machine, with at bottom or battery compartment (laptop) or top/side if its a desktop computer.

COA Certificate of Authenticity:

What is the Windows Certificate of Authenticity?



Windows 7 Home Premium (x86) - 32 bit

Windows 7 Home Premium (x64) - 64 bit

Windows 7 Professional (x86) - 32 bit

Windows 7 Professional (x64) - 64 bit

Windows 7 Ultimate (x86)* - 32 bit

Windows 7 Ultimate (x64)* - 64 bit



32 vs 64 bit

Is my PC running the 32-bit or 64-bit version of Windows?

ImgBurn - In addtion to supporting the creation of CD's from .ISO files,
it supports a wide range of other image file formats, and it's free.

Note: Always use the slowest burn speed (4x or 2x) if offered a choice.

Windows Insider MVP
MVP-Windows and Devices for IT

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Question Info

Last updated July 29, 2020 Views 33,056 Applies to: