I installed a used hard drive on my dell optieplex 150 wiped it clean and reinstalled windows xp with the dell cd everything went fine except when I turn on the PC I get a error diskette drive 1 seek failure. If I pressF1 it will boot to windows xp what can I do so that I do not have to press F1

There will be a setting in your BIOS for such a thing. Where it is and what it says depends on the BIOS.

If you unplugged any cables while swapping the hard drive, doublecheck your cabling and confirm that the red stripe on the floppy cable is on the pin 1 side of the floppy interface connector and motherboard connector. Also confirm power cabling to floppy. Static electricity damage could have been possible too if you didn't take precautions.

Diskette drives are usually numbered beginning with 0, so if the system is looking for drive 1 that would be the second drive. If system doesn't have two floppy drives you have either a BIOS misconfiguration or a cabling problem.