Trying to REINSTALL XP Pro on my dell Dimension 4600.Format complete and trying to BOOT from the CD ROM drive.I keep getting a "NO PRIMARY DISC FOUND" WHAT AM I DOING WRONG? THANK YOU IN ADVANCE FOR YOUR HELP.What happened prior to this ? ?
Is this a new HDD ? ?
What type of XP CD is this ? ?

p.s. Where you been hiding ? ?Prior----Problems booting, problems shutting down, kept getting boot of the internet, basically a messy hard drive.

It is not a new hard drive. The hard drive was removed and reformatted using a usb connection via another machine.

The disc used is the one that came with the machine. XP Pro service PACK 2.If it is not a SATA drive the only reason for this error message would be a loose cable or disk failure.
Double check your connections and also DLoad and run the HDD manuf. diagnostics to check the health of the drive.It is not a SATA drive, so I will run the manufacturers diagnostics as suggested. Will keep you informed.You didn't answer my 4th question....