I install all the cards, then the OS. After that, I install the mobo drivers, directX, video card drivers, and sound card drivers (if possible, download the newest drivers ahead of time). If there's anything left (ethernet, modem, scanner), I'll go to the Hardware Manager in the control panels and click on any device that has a question mark with an exclamation point through it. If you click on it, there will be an option to reinstall drivers. I do this, and direct it to the appropriate folder. There must be countless correct ways to do it, but this has worked well for me.