Windows 7 recovery disc doesn’t start

Hi there, my problem is that I have windows 7 64b home premium. It came with my laptop Toshiba and I had to make a recovery disc in order to reinstall windows if I have to. So I did the recovery disc in a DVD RW drive. It shows that the recovery disc is ok, I can see the folders on it (boot and sources). The problem is that when I insert the disc in the DVD drive it doesn’t start. I tried to restart my computer, after that insert the disc, or insert the disc and then restart the computer, then go to my computer right click and autorun…and nothing. I don’t know how to start the reinstallation. What I'm doing wrong?
Thank you in advance.

Thank you guys for your quick reply, yes indeed I’ve tried with restart and press del then I press F8 and I went to a page that shows:

Repair your computer

Safe mode
Safe mode with networking
Safe mode with command prompt

Enable boot logging
Enable low resolution video
Last known good configuration
Directory services restored mode
Debugging mode
Disable automatic restart on systems failure
Disable driver signature enforcement

Start windows normally

And I don’t know which one pick.

Ah… yes, Im now in the boot menu, it was pressing F12.

1: P1-Hitachi Ht………
2: P4-TSSTcorp….
3. Floppy
4: Ralteck Boot Agent

Enter BIOS Setup

Im afraid to touch something wrong...

Yes F12 is the way way to go if your computer supports it for temporarily selecting an alternative boot device. Next boot it returns to your standard boot device ordering.