I have found a cure! On my system everything but the optical drive worked fine, no overheating and good picture. But the optical drive eventually would not read discs! At first I had to put it on its side (opposite side to screw-in vertical stand) and keep it there. That's ONE temporary fix..another that I soon discover when that eventually stopped working was MANUALLY SLIDING OPTICAL DRIVE TO LEFT POSITION BEOFRE STARUP. Found that it was very stiff and the motor wasn't able to move optics to "read" position and where simply stuck in open!