RH7.1 Install hangs

[ferg]

RH 7.1 boots the CD ROM.
Displays the welcome screen with the various install options. Whenever I hit <ENTER> for the graphical mode or even <TEXT> I get

Loading initrd.img...................
Loading vmlinuz...........ready
No setup signature found...

and the system just hangs there. Any ideas as to what's happening?
Thanks

[lm72]

Did you burn these CD yourself be any chance?
If so you may want to check to see burnt them ok

Alex :)

[ferg]

No. they are original RH Professional server bot at CompUSA. I installed twice from the CD's before

[ferg]

Might it be the CD drive itself

[ferg]

Swapped out the CD Drive and this puppy is blazing along. Thanks