Help! hp laptop will not start up. hp logo comes on with message "press esc key for start-up menu" when I press esc a screen comes up that says " Boot device not found Please install an operating system on your hard disk Hard Disk - (3FO)" When I press F2 for system diagnostics and press F4 for Hard disk Test it says "Hard Disk Not Exist". Can this be repaired? Do I need a new hard drive? The laptop is two years old and warranty has expired. Is it worth fixing? Please help.