Hi VAGGELIS, The 5559 model does support functionality on Win 7 OS.  After installation, you could download and install the Win 7 drivers here - [URL] See this article to install the driver in the right order - [URL] however, you might not need to install all drivers available in the site. As long as there are no unknown devices in device manager and the system has basic functionality as per your need, you are good to go. Also, please click my DELL-username and write me a private conversation with the service tag and your contact details(Name and Email) for case records. Let us know if you have any other queries.
Hi, I have a laptop Inspiron 5559 with service tag <ADMIN NOTE: Service tag removed per privacy policy>  which has Windows 10 installed. I decided to format my laptop and install Windows 7 Professional. Do the drivers for Windows 7 exist and are compatible with my laptop in order to perform the above action? Thank you for your help.
Drivers availability for Windows 7