I'm using a Compaq Presario CQ50 laptop and has a single DVD drive installed. When I press the eject button on it, it opens fine, but when I close the disc tray, it opens again and needs to be closed again. I repeated it many times to make sure i wasn't making the mistake, and this problems doesn't happen always, but some of the times, especially the first tim I open it after boot up. Please help.