Marv, replace the Ribbon IDE cable and make sure the drives are connected
properly. Red stripe on
cable should align with Pin 1 on drive connector and motherboard
connector. Also, take a look at this
to see if it applies.
http://support.microsoft.com/default.aspx?scid=kb;[LN];314060
"Marv Wade" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> My son has an HP system with a DVD and a CD ROM. For some reason the
system
> quit "seeing" both of these drives most of the time. Sometime, however,
> they appear to work, but most of the time they do not. They are both on
the
> same cable. What would be the most likely reason for this?
>
> Marv
>
>