If you are receiving this message whenever you are trying to update or install Windows 10, it is just because of the driver for your hardware and it will not be supported in Windows 10.
“The display manufacturer hasn’t made your display compatible with windows 10. Check with the manufacturer for support”
As a brand, Windows 10 operating system has a minimum hardware requirement so that it supports all the features and specifications of the new operating system. So, there are some older generation graphics cards that are not able to support with Windows 10. If you still install Windows 10, graphics performance and display issues may take place due to using default Windows drivers that actually do not allow for full performance from the unsupported graphics card.