I put my old Dell Inspiron laptop with a 1.6 ghz CPU and 512 mbs of RAM to work by making it into a Halo CE dedi server and even a torrent downloader on the rare occasion. All I am saying is that you might not know when an outdated lappy might come in handy. But it's funny that your Dell's battery is dead... Mine has gone through two batteries and is currently running without one at all.. -_-
Yeah, we forget sometimes that they are consumables.
A fully functioning laptop may be worth more than the sum of its parts. On the other hand, if it's the kind of laptop that everyone wants to hold onto then there might be a good market for parts and it could be worth more disassembled.
I know I have a few synths that I could part out for 4-6x what I originally paid for them.