The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Gateway MX7525 DVD problem

    Discussion in 'Gateway and eMachines' started by Nevermore552, May 4, 2006.

  1. Nevermore552

    Nevermore552 Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    I recently purchased a Gateway MX7525. Initially the CD/DVD drive played DVDs with no problems, now it won't play them at all. It has no problems with software CDs or music CDs though. I've tried uninstalling then reinstalling the drivers with no luck. Any suggestions?
     
    Nevermore552, May 4, 2006
    #1
  2. Blacktop01

    Blacktop01 Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    I also have a mx7525 with a Ts-L532u dvd drive and have the same problem. I realize this is an old thread, but am looking for answers myself.
     
    Blacktop01, Nov 18, 2007
    #2
  3. lokster

    lokster Notebook Deity

    Reputations:
    63
    Messages:
    1,046
    Likes Received:
    0
    Trophy Points:
    55
    how recent? if still under warrenty send it back to gateway.

    have u tried using 3rd party software to run dvds? or download the latest codecs?
     
    lokster, Nov 18, 2007
    #3
  4. PGJandover

    PGJandover Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    This problem is most likely caused by having played a scratchy or noisy DVD or CD. A cheap DVD player in the laptop may also contribute to this. After WinXP sees some number of errored data blocks from the DVD, it reverts the IDE Secondary Channel to PIO mode and disables DMA mode. You NEED DMA mode to watch movies on the master drive of the Secondary IDE. The Windows adjustment is "permanent" (lousy idea of some Microsloft developer...)

    Here's the solution to this problem - I found it at

    http://winhlp.com/node/10

    You must use regedit.exe to cure this (ie edit the windows registry...)

    Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}
    (note ..96A-E325... is UNIQUE)

    Under this key, look for the entry "0000" or "0001" etc. that has the following properties:

    DriverDesc = Secondary IDE Channel
    MasterIdDataChecksum = ?some value?

    Delete the MasterIdDataChecksum line from this entry, then reboot windows. Verify using Device Manager that the secondary IDE channel is now "DMA mode".

    Good Luck!
     
    PGJandover, Jan 6, 2008
    #4