ever since i have had my computer the cdrom unit doesnt read data as well as it should do, nor does it play audio cds properly it can take ages to read a disc and can cause the computer to freeze if it struggles, is there any way of adjusting it or making it read better, i have tried many different media that all work on other machines perfectly, so i do think the hardware is causing the problem rather than media or software, any help would be most appreciated!!!!

sounds like hw to me !!

HW means.......................?