Dell Primary Drive Not Found OR Secondary Drive Not found 0 or 1

Dell Dimension 2400 Boot error Primary - OR - Secondary drive 0 or 1 not found The error can be for Windows XP or 7 - or other. Error is seen upon boot up before the Operating System loads so is not Operating System Dependent When you see the error upon boot up - you should be able to select F1 to continue or if you want to fix the error / problem Try the following. Enter the BIOS Setup by pressing F2. Turn on Caps Lock, Scroll Lock and Num Lock. Press ALT + E then ALT + F (should hear beep) then ALT + B When Pressing the keys, Hold down ALT, then hit the second key while still pressing ALT, then let go of both keys, repeat until all 3 have been ran. This will reconfigure the boot devices.