I have an HP DESKTOP-L5DNJUP OS Edition Windows 10 Professional Version 2009 OS Build 10.0.19045.54

[Wesolych]

DESKTOP-L5DNJUP

OS Edition

Windows 10 Professional

Version

2009

OS Build

10.0.19045.5487

System type

HP ENVY All-in-One 27-b1XX

RAM

16 GB

Serial number

8CQ744003Q

can I upgrade this computer to Windows 11?

[Paul_Tikkanen]

Your PC's i7-7700T processor does not meet Microsoft's minimum W11 processor requirements and your PC's motherboard does not support any Intel 8th generation core processors.

You can upgrade to W11, but you have to use a workaround because your notebook's processor does not meet Microsoft's minimum W11 processor requirements of an Intel 8th generation core or newer processor.

If you are happy with your PC, and if you are interested in doing an in-place upgrade from W10 > W11 24H2 on your PC as is, watch this video, which is the easiest way to do it in my opinion, and I have tried many different ways to do this during the last 3 years.

How to Install Windows 11 on Unsupported PC in 2025 (New Easiest Method, No CMD)

Download the W24H2 ISO file and use that (3rd option).

Download Windows 11

You can download the free 7-Zip file utility from the link below. The top line is for 64 bit.

7-Zip

You'll have to repeat this procedure each October when Microsoft rolls out the new builds because a PC that does not meet Microsoft's minimum W11 hardware requirements will never automatically get the update to the next build.

Other than that, your PC will continue to get the monthly cumulative and other updates.

That's only a minor inconvenience to have continued OS support beyond October of 2025.

If the notebook does not work as well on W11 as it did on W10, you have 10 days to easily go back to W10 as long as you don't delete the W11 upgrade files or the Windows.old folder.

See option 1 at the link below for how to go back to W10:

How to Downgrade from Windows 11 to Windows 10