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Toshiba Sattelite Pro no display

Discussion in 'Hardware' started by nashsaint, Feb 22, 2013.

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  1. nashsaint

    nashsaint Thread Starter

    Jun 25, 2006

    Laptop Model: Toshiba Sattelite Pro L450
    Problem: Powers but No display

    Laptop not dropped or anything. The monitor just displays black screen. No power. The laptop powers and I can hear the fan and the hard drive acquiring as what you would hear on normal boot sequence. These are the steps I have performed so far.

    Battery drain:
    1. Removed the battery
    2. Pressed power button for 1 minute
    3. Connected the power cord then press the power
    result: same

    Screen tilt:
    1. Removed battery
    2. Tilt screen 20-30% enough to press the power button
    result: same

    External Monitor:
    1. Removed battery
    2. Connected power cord
    3. Connected external monitor
    4. Pressed power button
    5. Pressed Fn+F5
    result: same

    Disconnected peripherals
    1. I removed hard drive, dvdrom, memory
    2. Pressed power
    result: same

    CMOS battery reset
    1. Removed cmos battery overnight
    2. Fitted cmos battery again
    3. Pressed power button
    result: same

    Memory module
    1. Removed memory module
    2. Fitted to another slot / Used another memory module
    result: same

    Tried all this with and without battery, I get the same result. One thing I noticed, no sound or anything. I tried pressing any keys for longer period of time but nothing happened. Removing the memory module also doesn't produce any sound. Pressing the power button for a long period of time while the power cord is connected doesn't turn off the laptop.

    I am confused whether this is a motherboard or a screen fault.

    Please help. Any help is greatly appreciated.
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