Acer has posted a disc image on its FTP site with everything you need to restore an Acer Aspire One mini-laptop with Linpus Linux Lite to its factory default condition.
There are three ways to use the 1GB disc image to restore your system. You can download the disc image and burn it to a DVD, then use a USB DVD drive to boot your system from the disc. If you don’t have a USB DVD drive, you can burn the image to a disc, and then run the utility on another PC that has a DVD drive to prepare a USB stick that can be used to install the software on your Aspire ONe.
Or you can follow the instructions at macles to use the Acer Aspire One Recovery DVD Installer, which will let you prepare the USB stick without first burning the DVD to disc.
Keep in mind, any personal data or settings you have installed on the netbook will be erased if you use this recovery DVD. So make sure to backup your data. But the recovery disc can come in handy if you’ve royally messed up your machine or if you plan to sell your netbook and want to remove any personal information first.