(Ayuda) Mejorar Tarjeta madre, De Vídeo y Procesador.

Good evening, I have an Inspiron 15 (7537, mid 2013) core i5 factory output. 

I want to know if I can turn up to an i7 processor, or be installing a motherboard with support for nVidia GeForce GT 750M 2GB card. if possible prices, suppliers and where I get service, or if the only possible upgrade is the ram? if you could answer my mail

Thanks and Blessings.