Asus G51j Recovery Problem

Hello, im trying to recovery my laptop to "out_of_the_box" condition. As i know there is a recovery partition exists for this. But i cant really use it properly.
I press F8 while loading so im getting to the "System recovery options" menu which says: Choose a recovery tool:
1) Startup repair
2) System restore (restore windows to an earlier point in time)
3) system image recovery (recover your computer using a system image you created earlier)
4) Windows mermory diagnostic
5) Command prompt

As i understad i should use #3 right? but it says me "Windows cannot find a system image on this computer".
Where i did wrong? help me plz, i really want to recover my notebook, i used him for about 16 month and there are much trash in system slows it ; (
and sry for my sux english ; - )

 

When your machine was new did you use the AI recovery program to create the disks? If not, try pressing F9 after power on, there should be an option to restore if the restore partition that came from the factroy is still there.
The option you are trying to use (F8) will work if you created a system image through the windows backup utility.