...that your computer loads device drivers every time it boots even if the device for the driver isn't actually present any more. You can stop it doing this:
http://techrepublic.com.com/5100-10877_11-...tml?tag=nl.e101 (http://techrepublic.com.com/5100-10877_11-6017628.html?tag=nl.e101)
Caution recommended as you can really screw things up if you get this wrong :)