Disc Drive won' work

Hello,
i have a hp pavillion dv 2000 and my Disc drive doesn't open anymore. I have done the manual opening and checked it out but still nothing seems wrong with it, When i push the button it doesn't flash or anything. Also about the same time my sleep stopped working, when i close the lid, the screen goes black but the computer is still running like usual (fan and lights). and the only way to fix it is to hold down the power button until the comp. goes off, im havin some issues. any suggestions.