How do you do a factory reset on a acer machine unsing windows vista?

I just bought this computer and it is acting up already and i just want to start fresh again but it didnt come with a disk.

How do you do a factory reset on a acer machine unsing windows vista?symatec

On an Acer machine using Vista, at boot-up try ALT + F10

How do you do a factory reset on a acer machine unsing windows vista?vista

when you boot up your computer check for any messages that say Sytem Restore press F11 or something like that if not then call up ACER and ask for some restore disc, they shouldnt be that expensive longest you have proof that you purchase that computer and its not stolen.