So sorry to heat the Samsung isn't working. i would tweak the Philips to read burned media whilst the Samsung awaits repair. Can you give a better desciption of the noise. Like a clicking noise, a grinding noise. If its a clicking noise, then it has a bad laser, try a pot tweak on that... However... if it is a grinding noise, it can't spin the disk, the disk clamp is probably bad, try opening it up and cleaning it off. the reason Philips drives have bumps on the bottom depends on what drive you have. If it is the VAD6011, there is no reason for the hump except for a dust trap. If you have a VAD6035, then it is for the laser, the new models have a laser that looks like a NASA expirament (its huge!). As for the power chord, what side it is on depends on the manufacture, you'd have to ask them why they move things, it dosn't matter that much though.