I just got me an Acer aspire one zg5. Whwn i turn it on and it should be ready to run it just show a black screen with a white cross. the cross is the mouse pointer.. Ive tryed to update the bios, but its still the same. When i then try to install a new window via an ekstern dvd-drive it wont read, but will just show the black screen with the white cross mouse pointer?? Any ideas what i can do next??