CD/DVD drives stopped working! Help please!

I have a big problem with my pc. When I start up it says "Sr risk of instability [Expert] - Allows full customization of performance options. Advanced users only". It says that under where it says the memory frequency, primary master, primary slave.

It gives me the option to press F1 to continue. When i do, windows boots like normal but the only problem is that the cd drive and dvd drive dont work. When i go to device manager it says the devices are working fine and the drivers are up to date but when i put a cd or dvd in it says "E:\ is not accessible. The disk structure is corrupted and unreadable." E:\ is my cd/dvd drive.

Can anyone help me?
Marc

About 5 seconds after i clicked on the power button to start the pc.

I have not actualy done any bios overclocking. I changed the frequency to 200 there was a choice between 100/133/166/200. Even if i use fail safe settings it still doesnt work.

Don't worry guys. Im still here. It was just a misunderstanding between my friend, me and the admin. I still have the problem and need help. Oh and thanks so much zigzag, you really helped me out with the ram!