What do I have to do to repair my Satellite P775 optical drive?

This is a beastly Toshiba Satellite P775, and I have looked all over the net to find an explanation as to why my OD will not work. It is a blu ray drive, but I have found that may have had the same problem while theirs were not BR--none of them were resolved. It started about 6 months after I bought the laptop (I should have gotten it replaced then) but I disregarded it at the time. My drive has not been hit, I have checked all the drivers, I have checked for any software that might interfere with it properly functioning, but often (over 95% of the time) my OD acts as if there is no power to it. This is not a problem with toshiba's "power saving mode" either--regardless of whether the drive is turned on or off in the power saver, my drive is completely undetected. Any help would be greatly appreciated.