how can i restore acer 7720g to factory setting with no password ?thanks

Solution
get a windows disk usb, boot up from it by going into your manual and searching for BIOS or BOOT Order, pick the usb, CD. and reinstall windows. make sure to get the correct Bit type.
get a windows disk usb, boot up from it by going into your manual and searching for BIOS or BOOT Order, pick the usb, CD. and reinstall windows. make sure to get the correct Bit type.
 
Solution