Please my dell desktop and my gateway systems does not detect hard disk. if it detects the cd rom it will not detect the hard disk and if it detects the hard disk it will not detects the cd rom. i have tried to change the id cables but to no vail.please what can i do?

check ur disk jumper and set according to instructions on the disk label. avoid contradictory settings like Select Cable and Master at the same time. also, your disk might be failing. visit www.nigeriadatarecovery.com