I have a HP laptop running windows vista and just recently my dvdrw drive doesnt show up in windows. I have rebooted, tried safe mode and even flash the bios and still nothing. When I check event viewer it shows 2 errors, one is for the plug and play manager stating the dvd drive disappeared without notifying it was removing it and a error for cd rom saying still not ready. Any ideas of what the cause could be or a solution to fix it.