You have two options when it comes to a recovery disc on a laptop.
First you can contat the customer support page of the brand of laptop you have and request a recovery disc. Some companies will send one free and others will charge arouind $10 and sometimes more , again depending on the brand.
Second all laptops come with a hidden partition on the hard drive and this partition contains all the recovery software and a copy of the OS that is on the laptop. You would just need to go to the Acer support page to get instructions on how to access the hidden partion and the recovery files.