Try one of the optical drives on the primary channel with the hard drive.
[HP Pavilion 7935 desktop, win2k pro, athlon 1.7 ghz, 512mb ram and originally with a cdrw drive]
Recently i added a dvd drive and started the machine without the side panel to test. Everything was fine. I tested out a dvd movie and it played!
Shut off. Attached sidepanel and restarted. I get this message: "No operating system found".
Both the original CDRW drive and the new DVD drives are on the secondary channel and both are jumpered as CS.
I disconnected the dvd drive. Everything is back to normal. I disconnect the CDRW drive and attach the dvd drive. Everything is fine. I just can't use both of them together.
Please help.

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