Hi Dick Clevenger,
Please share the system model & the operating system.
Earlier, were you using an IDE hard drive?
Reboot PC and press F2 key repeatedly at Dell logo. A BIOS screen will appear. Check if the hard drive is detected.
You can also load defaults in BIOS depending upon the BIOS version utility.
Please share the system configuration details; I will help you further.
Thanks and Regards,