Just thought i would include my common problem to the mix. Hadn't watched a dvd for a while (worked perfectly last time). I settled in for a movie last night and got the "incorrect disc" and "bAd" messages. I blamed my kids.... oh well.
I don't believe the discs were dirty (i tried both the questionable dvd i rented from library, and a brand new one which had only been played once). The library dvd played perfectly on my computer. Hence i fault the dvd player.
I am trying an unplug/plug back in solution in an attempt to reset any computer error message. I'll report back under solutions if this does any good.
After having this problem
Incorrect disc and bAd
in my Toshibha DVD Video Player SD-3980 after my father was playing with the skip forward and back and ended up messing up and jamming the lens in the DVD player. My only option since I work with computers and new that lens jamming happens, what I did was unplugged it, opened the top, moved the lens chip forward until it clicked in place and then put it back together and I worked. So if you have this problem all you have to do is open it and readjust the lens
I have tried cleaning the lens and all so the age old solution of plugging and unpluggin the system. Neither of them works. I have also read on many other forums that Toshibha has this problem. This is a piece of junk.
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You may have encountered a problem that will eventually hit most users who write their own DVD's. The media used to create your DVD's is not immune from damage or aging, and will eventually fail.
You might try to play it on a computer from one of your familly members or friends. Different drives are better at potentially flawed discs. If one of them plays okay, it may be possible to copy your original disc on that computer to make a new copy.
Obviously, how you treat the DVD's you create plays a big part in how long they will last. If you handle them only by the edges, never lay them down on other surfaces where they might get scratched or attract dust, and always put them back in their sleeves or cases, that will help.
The quality of the blank DVD media is also a big factor in how long the media will last. You can search on the web for quality comparisons of DVD blank media to help you make a purchase decision. No media is perfect, and there are error-correcting routines that are used by your computer software to account for the minor surface imperfections that will be present on any blank DVD disc. But there are definitely DVD media makers who produce higher quality blank media than other low-cost makers. This is truly a case of "you get what you pay for".
One other note: While your blank media may say it is rated for "16X" (meaning it can be created using a disc rotation speed that is 16 times the normal rotation speed), I personally never burn my DVD's at the rated speed. Frankly, I don't trust that having the laser beam speed across the disc at 16 times the normal rate is a reliable way to create a long-lasting disc. So I always access the recording options for my disc burning software and set the burn speed to a lower value, like 4X, so ensure the laser has enough time to create a longer lasting burn image on the disc. This applies to CD blanks as well, where some of the drives support 52X speeds. While I don't have any research to back up my disc burning recommendations, I just feel better not pushing my equipment and my disc media blanks to their upper limits.
The problem with using rental discs is that they are dirty. Buy a dvd player cleaning disc and follow the instructions. These discs help to realign the laser. If this does not help try cleaning the disc with a disc cleaner. Also depending on how new the dvd is there have been a lot of discs manufactured outside of the US that have been bad. It may not be your machine but the discs. I personally went through 6 of the same movie before i gave up and rented something else that worked perfectly fine. Hope this helps you watch.
Sometimes this unit gets "confused" - not sure why -- but try first using a CD cleaning disk and let it start and stop a couple times (sometimes lens gets dirty and does this) - if that doesn't help then try unplugging unit and leave unplugged (from wall socket) for about 30min then plug in, set local time and then see if the disks play okay - sometimes this "resets system"