I have been going through loaner computers in class and have downloaded autocad from the Education Community on two computers. I now have my own computer, and I would like to deactivate the two computers with the serial key I have been using and put it on to my new computer.
Activations are tied to the MAC address (unique network card ID) for each machine - if you're transferring to a different machine, look under your windows "start" programs autodesk - license transfer utility. You might have to go back to Autodesk for a new activation.
Best of luck
Did you ever actually activate the license on the two other machines - or were you running in 30-day trial mode?
If you did activate you will need to email the student community and request a new serial number as a serial number can only be activated twice.