Pioneer dvd-rw dvr-k17 problem. I have VGN FZ290 (sony customized model notebook). Now the problem

Question

I have VGN FZ290 (sony customized model notebook). Now the problem is that it show no dvd drive on MyComputer but shows yellow triangle on Device Manager as"YX3808M SVO066H SCSI CdRom Device".
OS is vista premium
+
pioneer dvd-rw dvr-k17 ata
Please assist how to fix the problem. The drive was working properly before
Thankyou in Advance

PIONEER DVDRW DVR-K17B ATA DEVICE - DEVICE WAS WORKING PROPERLY FOR TWO MONTHS. NOW IT WILL NOT READ DISK AND DEVICE MANAGER SHOWS A YELLOW MARK AND IT'S NOT WORKING PROPERLY.