MY Sony dru 540A dvd drive suddenly stopped recognizing CDs. If I insert a CD it does not read it and the read light is on till I eject the CD from thr drive. Can anybody help me. I am running XP SP2 and using Nero to burn DVDs and CDs. I have a 915GAV M/B with 1GB memand a 3.2 Ghz processor. I have a 120Gb sata H/D as well as a 120 Gb pata drive which is connected as a slave to the ide PATA socket with the DVD drive as the master. Tried changing the hard disk as master and the dvd drive as slave but it didn't change anything. the drive reads and writes on dvds perfectly, the problem seems to be only with the cd's, reading and writing. even original program cd's can't be read. Please help.