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Question: My laptop screen stays black, i even replaced an new one.

Step 1: Perform a hard reset

Completely resetting the computer can resolve many issues that cause a blank screen. Follow these steps to perform a hard reset:
  1. Turn off the computer.
  2. Disconnect all peripheral devices and remove all USB devices and media cards.
  3. Disconnect the AC power adapter and remove the battery.
  4. Press and hold the power button for at least 15 seconds.
  5. Reconnect the AC power adapter, but do not connect the battery.
  6. Turn on the computer.
    If the blank screen issue is resolved, you are done.
    If the screen is still blank, continue with the next step.

Step 2: Connect an external monitor to test the display

The notebook’s screen display may remain black when there is a corrupted graphics driver, or a problem with the LCD display’s back light. You can test the display by attaching an external monitor and restarting the computer. Testing with an external display is helpful if the notebook display is black but you can hear sounds; such as fans, spinning drives, or beep tones which indicate that the computer is operating. If you can hear sounds of operation but no image is visible on either display, contact an authorized repair center.
  1. If you are having trouble viewing the external monitor, press F4 (or the key with this symbol ) to switch the screen image among display devices connected to the system.
  2. If an image displays on the external monitor, there may be a graphics driver conflict with the notebook’s LCD display.

 

Step 3: Reset and update the BIOS

In case an item was changed in the BIOS, use the following steps to reset the BIOS back to its default configuration:
You can use these steps even though you will not be able to see anything on the monitor.
  1. Turn on the computer and repeatedly press the F10 key for eight seconds.
  2. Wait another 5 seconds.
  3. Press the F9 key. This restores the default settings of the BIOS.
  4. Press the Enter key. This accepts the changes.
    Press the F10 key. This saves the changes.
    Press the Enter key. This saves the changes and exits from the BIOS.
  5. The computer restarts.
    If the screen is still blank, continue with the next step.

Step 4: Reseat the memory modules

A computer may not display an image if a memory module is loose. Reseating the memory modules may resolve blank screen issues. To reseat the memory module, take the memory module out of the memory slot and then put it back into the slot to get a better connection so that the computer can recognize the memory.

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