Yes. In order to restore your computer using the Recovery Disks, you will need to use all 3 of them. To do this, you don't need to transfer the disks to your computer, but you need to reboot your PC, and press the Alt + F10 keys to access the Acer eRecovery Management. From there, select recover system from CD/DVD, insert the first disk and confirm the process. To be noticed that this will wipe all your data from the computer. When the program asks for the next disk just insert it and press continue.