I tried writing a CD in my new Packard Bell computer sometime ago and I tried sticking that CD in my old 486 computer and it wouldn't read it. What could be the problem because that is why I bought the CD writer in the first place...so I could transfer information and programs from my new computer to the old.
The reading CD-ROM is broken? Or it might not recognize the CDs if you've burned the with fast speed -- try to slow the burning to 2x or so.