Posted 11 July 2012 - 01:13 PM
Do you need to use the old machine simply to de-authorize iTunes? I would see if they can do this for you through their help desk online. If you still need files from your old machine, you can put the drive on your new computer as a slave. You could even buy an external connection kit for the drive (converts IDE or SATA to USB) so you don't have to worry about installing it internally in your new machine.
If you don't plan on using the old machine anymore, I wouldn't worry about replacing the video. If you did want to use it again, you can pick up an inexpensive card. You might want to test with another card first (if someone you know has a spare) just to make sure that it's the video that's dead. Are there any indicators that the machine is actually going through Post and that you just can't get video? A lot of motherboards have some kind of light or sound indicators of trouble just in case.