The disk drive won't open. I have opened it before and wathed a DVD on it but it took a while to open. I have been pushing the button on my disk drive trying to open it for the last week or so but it won't open
If it's stuck you can manually open it using a paper clip. Straighten out a small paper clip then put the small release hole right next to button to open the disk drive and it should open it. In the future and it keeps on happening, consider replacing the disk drive already.
Bear in mind that the paper-clip method is for emergency access only (eg to remove a disc when the drive has packed up).
It's not intended to be used to open the disc-tray on a regular basis as repeated use of that method will eventually damage the mechanism so you'll have to buy a new drive anyway as Laptop_Nerd rightly says.