Have lg bp125w and blue ray quit working but dvd works. how do I fix?

SOURCE: blue ray player wont play blue ray ''Kung Fu Panda'' disc.

i fixed this exactly as previous posted solutions, however a couple of points.
a) recordable CDs work if you don't have a DVD burner.
b) I didn't have a CD burner that would do an "image burn", I downloaded a free copy of "Express Burn" and that worked fine. The disk needs to be "finalised" or "fixated", it should do this automatically, or it may be a tick box selection.
c) I got a "No DWLD 09" when I put the disk into the player. I found this was an incompatibility with the CD-R (Maxwell) I was using. I changed to JVC and it worked fine.

SOURCE: samsung blue ray player loads dvd but goes to slideshow setting

We just figured this out. We had already tried to update the firmware through the blu-ray device itself directly from the website. For some reason, that was not successful. We had to download the latest firmware from the samsung site onto our computer and then burn it onto a CD. Then we used the CD to load into the blu-ray and updated it's firmware to handle some newer movies we had purchased. It now is able to play the problematic movies. The samsung site has instructions for doing this. Good luck.

SOURCE: My lg blue ray dvd player wont play regular dvd's

sounds like a bad optic or a software issue

SOURCE: blue ray DVD disc doesn't load but other DVDs do load/play.

You may have to apply an update. There's a key used to decrypt the content on Blueray discs that changes from time to time in an attempt to thwart piracy. Updating involves visiting the manufacturer's(Samsung) website, downloading the update onto a USB stick, and starting the player with the USB stick inserted.

SOURCE: My Sharp Aquos Blu Ray player cannot play my blue ray disc.

goto sharpusa.com and put in your model number. download the update to flashdrive and the update your blu ray..and it will then play