If you don't have the recovery partition on the laptop you need to either use a Windows OEM disk and install that way using the Windows key that should be on your laptop, or contact Acer for a set of restore disks from them.
If you don't have the recovery partition on the laptop you need to either use a Windows OEM disk and install that way using the Windows key that should be on your laptop, or contact Acer for a set of restore disks from them.