Windows 10 works fine on this model. You need a windows 10 DVD and to do a clean install. When it asks for a key say I don't have one. Choose the same version of windows that the 7 COA has. Which would be HOME or PRO. Then install WIN10 Home or Pro Go online and change the product key to the key on the OEM dell windows 7 COA. Then activate windows. Then download windows 7 drivers for audio and video and chipset and everything works. You cannot UPGRADE if you have VISTA and not windows 7.      
Can I update my Inspiron 560 with Windows 7 to Windows 10? It has 6 Gb RAM, 1Tb HD, 2.6 GHz dual core. However I do not find it in here [URL]#Inspiron-DT-MAY19U It seems a pity to throw in the trash.
Can I update my Inspiron 560 with Windows 7 to Windows 10?