My machine reinstallation and hard drive when prompted not found

Users questions: When prompted to reinstall said "Setup did not find installed on the computer hard drive, please confirm that the hard drive is switched on, and with the computer connection is correct" and so on, how the matter? My HP laptop , the hard disk can not reinstall ah
Experts answer: does not recognize hard drive, re-inserted Again, and then refresh it again to see into the CMOS.
  • This information provided by the users.Thanks!