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HP Notebook PCs - Computer Starts but Screen Remains Blank (Windows 10, 8)

This document applies to HP and Compaq notebook computers with Windows 10 or Windows 8.
Follow the steps in this document to resolve an issue with the screen remaining blank after the computer is turned on. If the computer does not turn on (no lights or sounds) or the screen is displaying an error message, see Computer Does Not Start (Windows 10) or Computer Does Not Start (Windows 8). If the blank screen occurs after you enter your password and there is a blinking cursor on the screen, see Black or Blank Screen with Blinking Cursor after Entering Windows Password.
Step 1: Performing a hard reset
Resetting the computer can resolve many issues that cause a blank screen. Use the steps in Performing a Hard Reset or Forced Reset to reset your notebook.
If the issue is not resolved by performing a hard reset, proceed to the next troubleshooting step.
Step 2: Connecting an external monitor to test the display
The notebook screen display might remain black when there is a corrupted graphics driver or a problem with the LCD display back light. To test the display, attach an external monitor and restart 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 that indicate the computer is operating.
Figure : Connecting an external monitor
Notebook connected to an external monitor
  1. Connect an external monitor to the notebook. For instructions on connecting an external monitor, see Connecting a Monitor, Projector, or TV (Windows 10, 8).
  2. If the computer screen does not automatically display on the external monitor, press F4 (or the key with this symbol ) until the screen image displays.
  3. If an image displays on the external monitor, there might be a graphics driver conflict with the notebook LCD display. With the external monitor connected, go to HP Customer Support to download and install the latest graphics and chipset drivers for your specific computer. If there is an updated BIOS version available, use the steps in Updating the BIOS to install it.
If you have updated the chipset and graphics drivers and BIOS, but the notebook display still remains black, the LCD might be defective. Contact HP for technical assistance or send the notebook for service.
If you can hear sounds of operation but no image is visible on either display, proceed to the next troubleshooting step.
Step 3: Recovering the notebook BIOS using a key press combination
When you upgrade the BIOS on your notebook, a copy of the previous BIOS version is stored in the HP_TOOLS partition of your hard drive. Many HP notebook computers have an emergency BIOS recovery feature that allows you to recover and install the last known good version of the BIOS from the hard drive, as long as the hard drive remains functional. This emergency recovery feature is separate from the BIOS and is designed to work in the event of a catastrophic BIOS failure.
Use these steps even if you cannot see anything on the monitor:
  1. Turn off the computer.
  2. Connect the notebook to a power source using the power adapter.
  3. Press and hold the Windows key () and the B key at the same time while the computer is off.
  4. While still pressing the Windows key and the B key, hold down the Power button on the notebook for one second, and then release the Power button and the keys.
    The power LED light remains on, and the screen remains blank for about 40 seconds. You might hear beeping sounds. Eventually, an HP BIOS Update screen displays, and the BIOS update begins automatically.
If recovering the BIOS did not resolve the blank screen problem, proceed to the next troubleshooting step.
Step 4: Reseating the memory modules
A computer might not display an image if a memory module is loose. Reseating the memory modules might resolve blank screen issues. To reseat the memory module, follow the steps in this section to remove the memory module from the memory slot, and then put it back into the slot to get a better connection so that the computer can recognize the memory.
 note:
These steps work for most notebook computers. To find steps for your specific computer, enter your computer model number and replace memory into the search field at the top of this window. For example, if you have an HP Mini 210-3000, you would search for 210-3000 replace memory. If you cannot find a memory replacement procedure for your computer module, review the User Guide.
For further information, see HP Notebook PCs - Upgrading Memory (RAM).
  1. Remove the AC adapter (electrical power) from the notebook.
    Remove all power from the computer and prevent accidental damage to the electronic components:
    1. Turn off the computer by pressing and holding down the Power button for 30 seconds.
    2. Unplug the AC adapter from the notebook.
    3. Slide and hold the battery release latch to the unlock position.
    4. Use your finger to lift the battery up and out.
  2. Remove and reseat the memory module using the following steps:
    1. Remove the memory module cover on the bottom of the notebook.
        Figure : Removing the memory module cover
        Steps for removing the memory module cover
      1. Loosen the compartment retention screws
      2. Lift up and remove the memory compartment cover
    2. Remove the memory modules from the memory slots.
        Figure : Removing the memory modules
        Steps for removing the memory modules
      1. Pull the retention clips away from sides of the memory module
      2. Gently pull the module out of the memory module slot
       caution:
      To prevent damage to the memory module, grasp the memory module by the side edges. Do not touch the metal contacts.
    3. Reseat the memory module by holding the module at a 45-degree angle, and pressing it firmly into the memory slot until it is firmly seated.
        Figure : Reseating the memory modules
        Steps for reseating the memory modules
      1. Align the notched edge of the module with the tab in the slot
      2. Firmly press the module into the slot
      3. Pivot top edge of memory module downward until retention clips snap into place
    4. Replace the cover over the memory compartment.
        Figure : Replacing the memory module cover
        Steps for replacing the memory module cover
      1. Align the cover tabs
      2. Tighten the memory compartment cover screws
  3. Reconnect the AC adapter.
    When troubleshooting problems, use only the AC power to perform the tests. After the problem is resolved, you can turn off the computer and insert the battery into the notebook.
    1. Plug the connection from the AC adapter into the notebook, and then connect the AC adapter to a working power supply.
    2. Perform any tests to verify the computer can start up and run Windows.
    3. With the computer turned off, push the battery into the base enclosure until the retention clips click into position.
    4. Turn on the computer.
    If the computer fails to boot to the Windows desktop, no LEDs light up and no beeps emit from the computer, contact HP for support. If the computer fails to boot but there are LED lights or beeps, proceed to the next step.
Step 5: Understanding LED lights
LED lights can indicate a variety of error conditions. If your computer makes one or two short beeps before starting, this is normal and your computer is telling you that BIOS startup was successful. If your computer beeps and does not start, a more serious hardware issue is likely occurring.
If the previous steps did not resolve the issue, refer to Computer Does Not Start and Emits an LED or Beep Code to help identify the beep codes or LED light patterns.

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