Windows 7 Starter

[MeneFotto]

Hi!
I have to replace the internal HD with an SSD and I need the ISO of Windows 7, for the reinstallation, but on the site:

https://www.microsoft.com/it-it/software-download/windows7

give me this message:

Mistake
The product key entered is associated with software pre-installed by the device manufacturer. Contact the device manufacturer to request information on the options available for software recovery

What should I do?

[WAWood]

@MeneFotto 

HP does not stock most of the Win7 recovery media anymore, so you probably won't be able to get it from HP.

If HP no longer provides Recovery Media for your model, another site you should check is: http://www.computersurgeons.com/

If they don't have it, an alternative site for the Windows ISO files here: https://www.heidoc.net/joomla/technology-science/microsoft/67-microsoft-windows-iso-download-tool
Download the Windows ISO Downloader.exe file and run it.
When the window opens, select the Windows tab in the upper-right and then click the Windows 7 radio button.
Under Select edition, choose the Windows 7 SP1 OEM Home or Pro -- to match what you have.
That will download an ISO file of the same OEM edition that HP uses.
You can then use the free RUFUS tool to create a bootable DVD or USB stick from that ISO file and then use that to install Win7 OEM.