I had the very same problem with my dad's new laptop.
The laptop was rebooting by itself and I tried to restore, using the option that creates a backup on the C-hard disk.
Thats what I shouldn't have done. Instead I should have chosen the reset all factory settings (without backup).
And there is no need to buy a recovery disk. Your laptop already has a recovery "hidden" partition and thats the reason you can restore your laptop in the first place. A recovery disk is important but would be used only when that recovery partition has failed or been damaged.
I found that when the laptop is rebooting, and you see the acer logo, you have to press "alt" and "F10" simultaneously to have the options to restore your computer again(the very same place where you chose the restore options). There, choose the "restore all factory settings" and it will take a bit of time but your laptop will be as new as it was first bought.
I know your post is a longgg time ago, but since we encountered the same problem I wanted to share what I learnt while trying long to fix that problem.