IBM 300 PL / P3.550MHz

Hello,
a friend of mine asked me for help on his IBM 300 PL / P3.550MHz. Since he exchanged the CD-ROM for a DVD-Burner, WindowsXP won´t boot up anymore. Just the Token-Ring displays and seems to try to find a network (which isn´t there, it´s a stand-alone PC).
He tried to plug the CD back in but it didn´t change a thing although this config worked fine before.
My guess is the harddisc has a problem and the PC now tries to boot up via network. But I am definitely no Pro, so any help would be great!

 

I would check to see if the hard drive ide cable got loosened when plugging in the new drive.
How is it set up? Is he slaving off the main ide channel with the hard disk?.or running off the second ide. . does he only have 1 cd/dvd drive installed? Look for loose cables, and make sure you know how the jumpers should be set. Just 1 hard disk and 1 dvd rom should be- hard drive on ide cable 1, jumpers set to master. dvd rom on ide2 set to master.

 

Thanks for the help! The jumpers were the problem. I should have come up with that myself