CD ROM not reponding

I am a new user to Tech Support - currently I have an Atlas computer with AMD Duron Processor and 384MB Ram. I am operating with Windows 98. The problem is that the internal CD Rom( Liteon CD-ROM - LTN526S)is not being reconized by the computer. It worked fine until I attempted to install an external Backpack CD-Writer, now neither the internal or external CD players work. What did I do wrong?

Thanks in advance

CC

 

does it work when you disconnect the external drive

 

No it still doesn't work -

 

try to use a win 98 boot disk and then see if the cdrom works . back pack will write a reference in your config and auto bat for windows 98 that might be canceling out your internal cdrom (ex device = mscdex/0/1) or something like that. you can look in msconfig ( typed in the run command box) to see it there

 

I checked the msconfig, nothing unsual there - will try and find a boot disk

 

you can create one in device manager I believe