I have had this same problem before with an old dell I was bringing back to life. It couldn't connect to the internet and the optical dive didn't work. I had to use a external USB optical drive, re-installed the operating system, then used a USB to transfer drivers. The only other way I can see to fix it is to get some sort of disc (used or not used) and add the drivers to it. That, or add another hard drive with a OS installed.
