What are some likely causes if during bootup, an error message appears that says "No Fixed Disks Present."

Poor hard drive cable connection-2. bad/missing hard drive or drive controller-3. wrong jumper settings on drive(s)-4. incorrectly configured cmos settings.-this error message indicates that during bootup, bios was unable to establish a connection with any hard drives.to pinpoint the cause:in cmos setup, make sure the hard drive channels are enabled and included in the boot order.check the integrity and quality of all drive cables and connectors (including power). they might be faulty, loose, disconnected, or missing altogether.the jumper settings might be inappropriate for the cable configuration. change the position of the drive(s) on the cable, and/or change the jumper settings.