Xps 15z refuses to download windows

So I have an dellxps 15z and i want to download windows 10 on it, I had put a drive in it that had both windows 10 and 7 installed and it refuses to boot from either, I tried to put an usb with windows 10 installation but the device most of the time

doesn't see the usb and when it does, it tells me

nothing is inside the usb, I also tried windows 7

but it didn't work, I tried another usb with windows

7 and it would work but tell me that "installation

cd/dvd device driver missing" I tried all methods I

could find but couldn't fix it, I tried to put a dvd but

the dvd driver it has is crappy and jammed despite

nothing being in it, idk what l'm going to do, any tips

would be greatly appreciated