M17x alienware laptop help

[robin43683]

What i7 cpu can be added.
Installed cpu core 2 something
What is the max ram.
Trying to install windows 7 using usb not detecting the drive

 

[robin43683]

Usb windows 7 installation not booting up.
But i can se usb stick when windows 10 loads from my computer,this tells me usb port is ok so whats wrong