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Re: dvd not read or played
Try to boot from the DVD rive by using any a windows installation disk. If you can't, then boot to windows and download and update your firmware. If still the same thing, load bios defaults, shut down system, unplug system from power outlet, push and hold down the tower's power button for ten seconds, replug system, turn on system, try to use the dvd drive. If still no go, replace dvd drive.
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it depends on the files on the cd ...they might require a certain software to be installed in order to be read..for example the player may not be able to read mp4 without a codec installed ..or vcd (video cd ) to need a dvd player installed or a player that supports video cd and dvd-es..Same way for other file types...or ...certain speeds being imposed on writing ..and your cd drive to be unable to read them on those speeds..
First of all check if the drivers are properly installed in device manager:- Right click on Computer and then click Properties--device manager, expand CD/DVD Rom drive and check if the driver is installed. If driver is installed right click on it and click on delete and then restart the computer.
If the above step doesn't help then try to delete upper/lower filter in registry:- Click Start--Run type 'regedit' and press enter and now expand the following- HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Control Class 4D36E965-E325-11CE-BFC1-08002BE10318 now on the right panel right click the 'upper filter' and click delete and then right click the 'lower filter' and then click delete.
If these steps doesn't help then it means there is a hardware fault with your dvd/cd drive and you need to replace the same.
When the CD/Dvd Drive becomes old the Optical Lense is not strong enought to read DVD because DVD is more dense than CD track. You can Try to clean the lense. There are lense cleaner available on the market.
Are you trying to play on a set top dvd player or in your computer ? if it plays in your computer and not a set top box either your set top box doesn't like to play DVD-R/RW or you can change brands of media
Just wondering if you have tried a good DVD Cleaner and see if that Helps you out sometimes the optics on the laser gets so much dust it can't read the DVD and will more than likely read CDs but not DVDs Try that see If it works. I have the same computer and two burners in it, and have had the same thing happen just a good cleaner and I was up and running,
try to use a cd that is working before, if it does not play then you need to clean your cd rom,we have a lot of brands of lens cleaner in hte market. after cleaning try to play again the cd which were running before. if it will play then run the cd which you noticed that it won't play. if it doesn't then that is a cd issue that might be not supported by your dvd rom
Playing DVD's requires a bit of constant transfer from the drive to the controller and from the controller to the RAM. First thing I would try is disabling background programs. One very likely culprit is if you have anti-virus software that is running a scan in the background.
Have you tried different DVD's? The problem could be the DVD drive is not reading the DVD properly. Have you tried different players? Different players sometimes work better. I would also suggest making sure that your sound drivers are up to date.