Black Screen/Blank screen after screen replacement


  1. Posts : 1
    Windows 7 Professional x64
       #1

    Black Screen/Blank screen after screen replacement


    Hello,
    Recently my laptop screen had to be replaced due to a cracked screen. Original screen was a Samsung and the new screen is LG. After this, whenever I install Intel HD graphics, windows boots up till the login screen and then goes black, one bright flicker, then completely black again. However, when I boot into safe mode and replace Intel HD graphics driver with Standard VGA adapter, everything works fine, except for crappy graphics ofcourse. I tried installing various old/new/latest versions of driver software, upgrade/downgrade BIOS, install monitor.inf file from lenovo website for this laptop model, everything.
    Odd thing: running Dxdiag shows my current display to be 1200x800 (32bit)(1hz).
    So, I tried to change the display refresh rate in advanced settings> Screen refresh rate, no luck, no other option except ' Use hardware defaults'. So, I went ahead an modified registry values as given here:
    How to Modify the Video Refresh Frequency in the Registry

    Again, no use. After I reboot and go back and check, its set to 1 by default.

    Tried 4 clean installs, installing on a completely new HDD, Windows 7 Pro, Windows 7 Ultimate, Windows 8 , everything..

    Is it a screen problem? Or some hardware ID kind of thing?
    What should I do ?
    Please help!



    Dxdiag information:


    ------------------
    System Information
    ------------------
    Time of this report: 2/3/2015, 06:26:14
    Machine name: UNKNOWN-PC
    Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850)
    Language: English (Regional Setting: English)
    System Manufacturer: LENOVO
    System Model: 3626AG2
    BIOS: Ver 1.00PARTTBLx
    Processor: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz (4 CPUs), ~2.4GHz
    Memory: 4096MB RAM
    Available OS Memory: 3892MB RAM
    Page File: 2051MB used, 5730MB available
    Windows Dir: C:\Windows
    DirectX Version: DirectX 11
    DX Setup Parameters: Not found
    User DPI Setting: Using System DPI
    System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
    DxDiag Version: 6.01.7601.17514 32bit Unicode

    ------------
    DxDiag Notes
    ------------
    Display Tab 1: No problems found.
    Sound Tab 1: No problems found.
    Input Tab: No problems found.

    --------------------
    DirectX Debug Levels
    --------------------
    Direct3D: 0/4 (retail)
    DirectDraw: 0/4 (retail)
    DirectInput: 0/5 (retail)
    DirectMusic: 0/5 (retail)
    DirectPlay: 0/9 (retail)
    DirectSound: 0/5 (retail)
    DirectShow: 0/6 (retail)

    ---------------
    Display Devices
    ---------------
    Card name: Standard VGA Graphics Adapter
    Manufacturer: (Standard display types)
    Chip type: Intel(R) HD Graphics (Core i5)
    DAC type: Internal
    Device Key: Enum\PCI\VEN_8086&DEV_0046&SUBSYS_215A17AA&REV_02
    Display Memory: 1721 MB
    Dedicated Memory: n/a
    Shared Memory: n/a
    Current Mode: 1280 x 800 (32 bit) (1Hz)
    Monitor Name: ThinkPad Display 1280x800
    Monitor Model:
    Monitor Id:
    Native Mode:
    Output Type:
    Driver Name: igdumd64.dll,igd10umd64.dll,igdumdx32,igd10umd32
    Driver File Version: 8.15.0010.2993 (English)
    Driver Version: 6.1.7600.16385
    DDI Version: unknown
    Driver Model: unknown
    Driver Attributes: Final Retail
    Driver Date/Size: 2/20/2013 03:14:11, 8314368 bytes
    WHQL Logo'd: n/a
    WHQL Date Stamp: n/a
    Device Identifier: {D7B78E66-4306-11CF-1B34-EA1CACC2CB35}
    Vendor ID: 0x8086
    Device ID: 0x0046
    SubSys ID: 0x215A17AA
    Revision ID: 0x0002
    Driver Strong Name: Unknown
    Rank Of Driver: Unknown
    Video Accel:
    Deinterlace Caps: n/a
    D3D9 Overlay: n/a
    DXVA-HD: n/a
    DDraw Status: Not Available
    D3D Status: Not Available
    AGP Status: Not Available
      My Computer


  2. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
       #2

    Not all laptop screens are the same. It is important to get a "replacement" screen, not a "compatible" one.

    On the back of the laptop screen is a product sticker (you can only read this before you install the screen). On that sticker is the manufacturer and model #. You can use that number to find exact replacements.

    How did you come to choose the LG screen?
      My Computer


 

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