So im just wondering, how exactly do i put an OS on an USB and make it my installation disc? Do I just format it and put the .ISO windows 7 on the USB?
Stick in your USB drive.
Open a command prompt and type in the following (note that this process will erase the contents of the usb stick):
Diskpart
List Disk
Select disk x (where x = the number of the disk that corresponds to your usb drive. You should be able to tell by the sizes listed beside it, if you put in an 8gb stick the size will be ~ 8000mb etc)
Clean
Create partition primary
format fs=ntfs quick
active
exit
Now all you need to do is copy the files from the iso onto the usb stick (so you need to extract the iso, not copy the iso itself).
Tell your computer to boot from usb and you'll be set.
Or you could use a programs like Lili Usb creator, Rufus .
https://www.youtube.com/watch?v=aFJwiILbsdo