Logically this problem should have been easy enough to sort but it has me beat right now. An oldish cd-rom was not reading all cd's and was very slow when it did, so I changed it for a new one but no improvement. It was slave to the HDD. I have since put it on a seperate cable on IDE 2, changed both cables and put it on both channels either as master or slave and none of these showed any improvements. Have you any suggestions?