because i had messed up my usb auto mount i have done a system restore like this inserted a usb pen drive in my windows laptop put the recovery cd in the drive rebooted the windows laptop you get a menu select make a recovery usbdrive after about 12mins you get finished message remove disk before reboot i removed the cd and the usb pendrive and the windows laptop rebooted into windows. inserted the usbpendrive into the linpus acer turned it on and pressed [F12] at the prompt and selected boot from usb after about 12 mins you get the message remove disc before rebooting you then have to do a live update as the recovery cd is out of date but i had no problems with either machine during this process mike46