Just to add to this thread. I just had the same issue. My internal BD-RW could not recognize any blu-ray discs. Only DVDs and CDs. After failed attempts trying to get valuable troubleshooting tips from LG, I happened to have a CD/DVD cleaning disc and tried this as a last resort. It must have performed some sort of voodoo, because the laser cleaning disc actually resolved my problem. If you encounter this and are completely out of options, its worth the $10 for the laser cleaning disc. Worked for me, hope this helps someone else.