Brand new acer aspire 7730 wont run intial start...

Question

just purchased brand new aspire laptop got it out the box charged it up started to go though set up got half way though startup screen and froze left it for 3 hours still no change so bit the bullit and pulled the battery out. on restart tryed resetting the bios settings but on reboot it just said no opperating system found!! please help as its now just a £400 black box!