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My toshiba laptops lights come on when i push the power button, but the screen remains black. why wont my computers screen come on

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Do you hear a beep when you turn on the computer???, does it seam to power on???, it could be a defective inverter (part that produce the back light of the LCD panel), try plugging an external monitor to see if you have a picture, if so than the LCD panel is defective (LCD it self or INVERTER) if not than it could be the computer it self that wont BOOT, try removing all components (DVD drive, battery, mouse, etc...) see if it turns on...

Good Luck!

Posted on Mar 16, 2011

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Posted on Jan 02, 2017

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A blacked-out screen doesn't necessarily indicate a broken monitor.
If the computer has run out of charge or is in hibernation or sleep mode,
if the screen is too dark, or if the display cable has come disconnected from the motherboard, the screen may appear black or fail to turn on. To fix a blacked-out laptop screen, troubleshoot the screen settings, check the LCD connector and see if the computer is awake and receiving power.
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Hold down the power button for 10 seconds to turn off the laptop.
Remove the AC adapter from the computer, close the screen, and then turn the PC over.
Slide the battery latch to eject the battery. Pull the battery out of its compartment. Turn the computer back over, open the lid, and insert the edge of a flathead screwdriver or other flat, solid object beneath the bezel above the keyboard. Wedge the edge of the keyboard bezel off of the top cover.
Work your way along the edge of the keyboard bezel to loosen it.
Pull the bezel off the laptop.
Trace the cable coming from the laptop screen to the connector found beneath the bezel.

Reconnect the display cable to the motherboard if the cable has come loose from the connector.
Line up the tabs on the bezel with the slots along the top of the keyboard. Insert the right edge of the bezel into the gap above the keyboard, and then push the bezel back in place. Turn the computer back on.

If the laptop screen is still blacked out, connect an external monitor to the video port on the side of the PC to confirm that the video card isn't defective.

If the external monitor works, the LCD screen could be broken.

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Here is the fix my toshiba laptop also wouldent turn on so i call them and here is what you do 1. unplug the laptop
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