Yes, we need more information on your Acer Model. Netbooks are limited since they don't have CD/DVD Drives. Like Vroom said, you should have a Recovery Partition, and maybe that's where you are having trouble with the Wizard. Normally with a CD/DVD Drive, you can Boot up with the Windows Disc and in the steps to load Windows there is a Format step. With a Netbook you need a Boot up Windows USB, and I don't know if there is an option like this.