You'd have to back up your files, you say you have an external drive so if that has enough capacity that should do. Transfer all your stuff onto that, then install Windows from scratch, and transfer your stuff back.
For the drivers, they're most likely .exe files packed in a .zip or .rar, right? So you'd have to pack them out (Windows 10 has a built in tool to open .zip files, but I recommend using 7Zip) and then run the .exe file to install them.
H'i kajay,
Let me just say thanks for taking an interest, it's most appreciated. Believe me, I need all the help I can get.
Right my first problem is this new build won't let me transfer my files, photos, etc. I can't get it to recognize my external hard drive, or USB sticks, or anything I put into any of the USB drives. Just after I boot up, It says this windows 7 is not genuine, and then goes into safe mode, and tells me to purchase a product key.
Well, I have got a new Windows 7 complete with a product key ready to install when I'm ready, but like you said I need to transfer my files first. I even tried putting the hard drive back into the computer it came from. I'm stuck, I don't know what else to do. I can't do it through easy window transfer because I can't get on the internet until I download the drivers. I've got myself into a right mess