LITEON CD-ROM LTN526D not working

[COLOR=Purple]OK first, I have no idea about any of this kind of stuff. About 6 months ago I purchased this CD ROM and have had no issues with it. Now it does not even recognize when I place a disk in the drive. Any ideas?? Please Help!![ :confused: :o /COLOR]

does the cd drive not respond to any cd at all, or only blank cds ? waht operating system do you have ?

LTN-526S? Or 529S? I ask because you said that you bought this half a year ago, but the 526S has been out of production for well over two years (was the drive new or used when you bought it?).