If you put a music cd in will it work fine?
Ok, if it plays ALL cd's and dvd's ok but only has a problem with SOME blu-ray then this MAYBE a normal problem where blu-ray is still new and the newer blu-ray disks will not play on some blu-ray players, however first check the manufacture (lg) lewsite for any software/firmware updates and perform any needed and see if this cures the problem. If not then use a cd/dvd cleaning disk or manually clean the laser eye with a micro fiber cloth or q-tip.
If you need further assistance I will be glad to help you.
Please note: The money you paid was just a deposit when you opened the question, the only way the experts get paid is when you are satisfied with an answer to click the accept button and then the expert gets paid out of that deposit you have already placed on this site for this question. If you are happy with the correct answer and are satisfied then please click the accept button.
The other most common problem and most likely problem in this case is the eyes start to fail this way to start, the laser eye will need to be replaced in that case unless there is a software problem, there are many problems that start as soon as a new update is installed and are correct with the next update however if this is not related then replacing the laser eye would be the most likely problem given the problems.