do you have a spare usb stick lying around?
use imgburn and make an iso image of windows and drag it to the usb stick
(might need to make the usb stick bootable aswell if it wont install windows) to do that use
https://rufus.akeo.ie/ then install windows from the usb memory stick (edit see you've tried that already)
also with the usb cd/dvd drive anything in the bios for legacy devices? try enabling/disabling that and see if it installs then
I've done the bootable USB wazza

I have literally tried everything yet windows 7 does not like this Crucial SSD lol
I did see the Legacy devices, it talks about handing off something. Didn't understand it but gave it a shot the other day just to see if it made a difference but nope
