I have recently taken my computer apart and put it back together. The POST checks/beeps say that there are no hardware problems and i have double checked that as well also checking all the cable connections to the hard drive and motherboard etc, and still, at the boot screen , the error message comes as follows
"Reboot and Select proper Boot device or Insert Boot Media in selected Boot device"
before i took the computer to pieces, i checked that the windows XP OS worked and it did. I have tried changing all the boot options and still the same error message comes up