When I put a DVD in it says ''loading,' but never plays It continues to display, ''loading''

Disc loading mechanism fault.

sounds like your lens has become unseeded and will need to be adjusted this can be done by opening it and seeing where exactly it is missing support however i would suggest purchasing a new one and returning this old one

open cover and clean the laser with alcohol and try again

Sony DvD player continues to load, then says can not read disk

Disconnect the power,push the eject button and connect the power while pushing the eject button.

Dvd players are only made to last a couple of years(the laser goes bad).If you play scratched disc's it won't last that long.Hopefully you didn't pay alot for the player,and if you did then you can get the laser repaired but its expensive.I usually wait until the things go on sale and pick one up for 20 or 30 dollars.When the laser burns out after repeated use I just buy a new one because fixing them is more expensive and unless you want to continue having problems its easier to buy new.These guys that put alot of money in these units are just wasting their money.

Sorry, no suggestion other than don't buy Samsung. That's my conclusion after owning the same model. It worked fine for a while, but now won't load any DVD... usually. Sometimes it will play one, but more often it won't. Mine tries to load ("Loading") for a long time, I hear the DVD spinning, then ultimately the screen displays "This disc cannot be played" or something to that effect.

You have a bad tact switch behind the front panel rewind button.

I've had the same symptoms on the last two Sony DVD's that I've rented. I managed to get around this by hitting one of the menu buttons after the loading message stopped.