My dvd drive is not reading dvds read cds

sir i have dvd-ram drive first its read dvds and cds suddenly it does not read dvds but read cds.plz answer me
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More about drive reading dvds read
  1. left click start in the lower left hand of the screen
    left click run
    type regedit
    left click OK
    Now the registry editor will come up
    double left click on HKEY_LOCAL_MACHINE
    double left click on SYSTEM
    double left click on CurrentControlSet
    double left click on Control
    double left click on Class
    double left click on {4D36E965-E325-11CE-BFC1-08002BE10318}
    look on the right side of the window for upper filters
    right click on upper filters
    left click delete
    windows will then ask you to confirm deletion
    click yes
    look on the right side of the window for lower filters
    if you do not see lower filters, you may be out of luck on this one.
    right click on lower filters
    left click on delete
    windows will then ask to confirm deletion
    click yes
    Close all the windows that are open
    restart the computer
  2. i dont have upper or lower filters on right side window what i do.......?
  3. praveen0917 said:
    sir i have dvd-ram drive first its read dvds and cds suddenly it does not read dvds but read cds.plz answer me


    i have the same problem with a dvd ram in my laptop it is reading CDs but not dvds
    some people have posted that dvd ram has two lenses with different frequencies to read dvd and cd
    is it true ???
    cuz i dont think so as whenever i eject the drive i can see only one lens

    plz reply
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