gajendraprasad147 :
I Brought new 7th gen i7 processor laptop.. i don't need windows 10 so can i install windows 7 or not.. if not why?
It is possibe to install it, of course. Having it licensed is another matter. Unless you are in a corporation with SA agreement, you can only use the license included with your laptop.
Windows 10 is NOT legally downgradable to windows 7.
If you don't care about legal issues, then yes, you can install windows 7.
If you can't find Windows 7 drivers for your laptop's components, you'll have to resort to drivers issued for windows 8.1, which will work with windows 7.
If your laptop relies on your 7th gen intel CPU graphics, you'll need to force the installation of Intel HD Graphics 520 or 530. It will work without...