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    Alienware M17x screen backlight brightness issue

    Discussion in 'Alienware 17 and M17x' started by TruongMinhTri, Nov 25, 2014.

  1. TruongMinhTri

    TruongMinhTri Newbie

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    Hello guys, first of all I wanna say sorry if my english not good enough to make you guys understand what I mention here. So if you have any misunderstand please leave me a comment I will try to explain these things.
    I have an Alienware M17x R3 which replaced the discrete graphics card HD7970M instead of GTX 460M (or 480M I don't remember exactly) and it's installed windowns 7 home premium. Because of the performance too weak when I try to play Dota 2 with Switchable Graphics so I disable the internal graphics card (HD3000) and just using the PCI express card.
    I used for HD7970M is the newest catalyst control center. And the problem had started since I use only the HD7970M and install the newest catalyst. That is when I press the power buttom. The blacklight brightness is normal but when it reach to the "welcome" screen of windows, the backlight brightness is decrease (be darker than at the beginning time), althought all of bright adjustments were set at highest (100%, in the power manager and everywhere I can set). I don't know what happen and don't know how to fix this issue. Maybe the reason is from the newest cataylyst?
    I also test this problem in the safe mode and the brightness doesn't change when it boot into Safe Mode.
    Can you guys help me how to fix this issue?
     
    TruongMinhTri, Nov 25, 2014
    #1
  2. Tomasimoes

    Tomasimoes Newbie

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    Hello,

    I have the same problem, and i realy cant find solution for this, i have seach all the web and cant find some one, or real solution for our problem.
    If some one now how to have the brightness back to noraml with the PEG in bios, i will apreciate forever!
     
    Tomasimoes, Feb 18, 2015
    #2
  3. SUADE8880

    SUADE8880 Notebook Evangelist

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    It is a known issue for having a 7970m with a m17x r3. It is fixed on Windows 8 but a driver issue on windows 7 but there is a work around. Click the link below.

    7970 Dim Screen Fix...
     
    SUADE8880, Feb 19, 2015
    #3
  4. Tomasimoes

    Tomasimoes Newbie

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    OMG cant belive its works like charm, soooooooooooooo many thanks, finlay this dam **** its working!!!!! thankssss again!!!!
     
    Tomasimoes, Feb 19, 2015
    #4
  5. SUADE8880

    SUADE8880 Notebook Evangelist

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    Glad it worked out! ;). Welcome to NBR! Lol.
     
    SUADE8880, Feb 19, 2015
    #5
  6. Alienware-L_Porras

    Alienware-L_Porras Company Representative

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    It's great to see that it worked out so easily. + Rep at the solution giver :)
     
    Alienware-L_Porras, Feb 20, 2015
    #6