|Well <F2> should be the correct key for BIOS Setup on most Acer laptops, but you have to press the key at just the right time. Press it too soon or too late and it won't work.|
For checking or changing the boot device on a "one time" basis you can instead keep <F12> pressed as soon as you turn on the laptop, that will bring up the boot menu.
Select CD/DVD Drive from the menu and press <Enter>. Your laptop should boot from the CD.