|Then follow the instructions on the screen. You evidently have a device with removable media selected and don't have the hard drive with Windows on it in the boot order.|
Boot to the BIOS (setup) and change the boot order.
Do you have a floppy drive? If so, be sure you don['t have a disk inserted.
Watch the POST screens at start up to verify the BIOS is configuring your hard drive. The drive may not be working.