My computer has been up and running for about 5 months. I have a cdrw, dvd player and the standard 3 1/2 floppy. About a month ago, the computer stopped reading the cdrw and dvd drives. I wasted money taking it to a computer shop. He said both drives were bad. I got the machine running again but it will not recognize both drives. I have to disconnect one and use it by itself. And now it does not recognize the 3 1/2 floppy. I have checked the pin settings over and over and tried the cable select as well as the master/slave settings. It worked fine after I originally set the computer up for about 3 months. Is there something I'm missing?