Phillip Corcoran said:
to boot from CD/DVD, you must press and hold F12 as soon as you turn your laptop on.
Then, when the boot device menu appears, select the CD/DVD drive and press <Enter>.
Did that, I could hear and see the light on the DVD rom lighted up and ran for a short while, and it went quite. It had been an hour, nothing happened. I'd tried the other set of the recovery disks, still nothing... Anything else I could do?