Hi guys, I'm having a problem with my dell Inspiron 1150 samsung CDRW/DVD sn-324s , when i start the pc up, it works fine if there is a cd/dvd in it, but once i take the cd/dvd out and put another one in the drive, the drive dissappears and the only way for it to re-appear is to restart the pc, could anyone please help me with this problem its driving me crazy... thanks..