Knowledge Base

Resolve No Power, No POST, No Boot or No Video issues with your Dell Computer



This article will help determine why your computer is either Not Powering On, Not Displaying Video or is Getting Stuck at the Dell logo screen or otherwise Failing to Boot all the way into the operating system.


This video helps you identify which of the following sections you should troubleshoot further:

Video (English Only) - My Computer Doesn't Start - Duration 01:21

Note: Please click on the title of the section you want to open below, in order to see the contents.

No Power For Desktops:

Computers have a power indicator LED that glows when it is receiving power.

On Desktops the front panel of the computer case has LED near the power button.

Try the following steps to resolve a desktop no-powering situation (There are more detailed instructions in the troubleshooting link below.):

  1. Try a different wall outlet, and power it on. (rules out the Wall Socket/Power in)

  2. Reseat the power cord which is connected to the Power Supply of the system and power the Desktop on. (rules out a bad physical connection)

  3. Swap the power cord of the Monitor with the system power cord and power on the Desktop. (rules out a bad cable)

  4. Test your PSU (Power Supply Unit):

    • If available press the BIST (Built In Self Test) button on the rear of the PSU and check to see if the LED next to the BIST button lights up for 3 seconds.(rules out an issue with the PSU)

    • If the BIST isn't available follow the troubleshooting instructions on the following link.

Once you've identified a No Power issue, you can find out a lot more information and troubleshooting help on this issue by using the article linked below :

Here is a quick video that covers all the reasons why your desktop is not starting up.

Video (Subtitles Available) - Power issues on Desktop computers - Duration 01:15

Note: Power cords supplied for a monitor may be different based on the Vendor, Dell Monitor power cords are inter-changeable with the Dell Desktops.

No Power For Notebooks:

On Notebooks the indicator that power is reaching the system can be a lighted LED power button or it may be an LED located at the upper part of the keyboard or along the front edge of the computer itself.

Try the following steps to resolve a notebook no-powering situation :

Note: Some models of Notebook such as the Ultrabook models may not have a removable battery. If you check your manual and it doesn't have your battery as a removable part then move straight to step 5.
  1. Ensure that the battery is fully charged.

  2. Remove the Battery and disconnect the AC Adapter; Hold the power button down for 5 seconds to discharge the Static Flea Power.

  3. Reseat the battery on the Notebook and power it on.

  4. Remove the Battery from the Notebook and power it on using only the AC Adapter.

  5. Ensure that the Power LED on the AC Adapter is lit to ensure the functionality of the AC Adapter, also try another working AC Adapter if available.

Here is a quick video that covers the reasons why your notebook is not starting up.

Video (Subtitles Available) - My Dell in 99 seconds: Can't turn on your laptop? - Duration 01:46

Once you've identified a No Power issue, you can find out more information and troubleshooting help by checking out the articles linked below :

The term POST refers to Power-On Self-Test, which is a series of checks the computer goes through whenever it starts. If the computer fails any of these tests, it will stop the start-up process and report a fault. Troubleshooting across Desktops and Notebooks use the same procedures, but different reference material.

No POST For Desktops:

Indications of a failed POST include:

  • If the computer is displaying the Dell logo and does not move past that point, it has probably failed POST.
  • If the power indicator lights up and it is amber or orange, this is usually an indicator that it has failed POST. Note down if there is a particular pattern in which it beeps or flashes.
  • If you see text on a black screen, the computer is currently performing the POST. If the computer stays in that condition and does not move past it, it has probably failed POST.
  • If the video screen displayed anything at all during the startup process but is now black, this probably indicates that the computer failed POST.
Note:
  • If the computer is not beeping and the Diagnostic LEDs are not flashing or lit, unplug all connections and remove all media communication devices (e.g. external monitors); reconnect one at a time and check if the computer functions.
  • For a Desktop at the Dell logo screen tap the F12 key to enter One Time Boot Menu and use the arrow keys to highlight Diagnostics and press enter. Some Desktops do not have an F12 key, to access the boot options you have to press the <0> (zero) key at the Dell logo screen.

For information on running and using the ePSA Diagnostics, please check out our :

No POST For Notebooks :

Indications of a failed POST include :

  • If the computer is displaying the Dell logo and does not move past that point, it has probably failed POST.
  • If the computer is beeping or if Diagnostic LEDs, Caps/Num/Scroll Lock LEDs are flashing, note down if there is a particular pattern in which it beeps or flashes. This is usually an indicator that it has failed POST.
  • If you see text on a black screen, the computer is currently performing the POST. If the computer stays in that condition and does not move past it, it has probably failed POST.
  • If the video screen displayed anything at all during the startup process but is now black, this probably indicates that the computer failed POST.
Note:
  • If the computer is not beeping and the Diagnostic LEDs and caps/num/scroll lock LEDs are not flashing or lit, unplug all connections and remove all media communication devices (e.g. external monitors); reconnect one at a time and check if the computer functions.
  • For a notebook, press and hold the <Fn> key and then press the power button. This starts the pre-boot testing and will launch ePSA.
Note: For Dell Latitude laptop PCs, you may try to recover the PC using the forced ePSA method. For more information, refer to the Dell knowledge-base article How to Use Forced ePSA to Recover from POST or Boot Failure.

For information on running and using the ePSA Diagnostics, please check out our :

If you are looking for further information and troubleshooting help to continue resolving this issue, you can use the article linked below :

After the computer completes the Power-On Self-Test, it will attempt to boot the operating system.

If the computer advances past the Dell logo screen and then hangs up attempting to load the operating system, it is most likely a No Boot issue. Troubleshooting this issue uses the same procedures across both Desktops and Notebooks.

Please follow the Video Guide Below.

Video (Subtitles Available) My Dell in 99Sec - Duration 01:46

In order to rule out any hardware problems, you should run the built in ePSA diagnostics.

Note: For Dell Latitude laptop PCs, you may try to recover the PC using the forced ePSA method. For more information, refer to the Dell knowledge-base article How to Use Forced ePSA to Recover from POST or Boot Failure.

Most No Boot issues come down to operating system issues. Choose the article appropriate to your Operating System (OS) and troubleshoot this further :

If the system is reporting a specific fault onscreen about the Hard Disk Drive, then you can Troubleshoot further on one of the links below :

If the power indications are normal but there is never any video seen on the computer's display during the startup process, this probably indicates a No Video issue.

Note: For Desktop computers - Remember that the monitor has its own power supply, make sure the monitor has a power LED indicator showing that it is powered on.

To troubleshoot a No Video issue, click on the links below :

Note: For Notebooks, press and hold the <Fn> key and then press the power button. This starts the pre-boot testing and will launch the ePSA diagnostics. The ePSAs will test your video with a series of patterns.

Video (Subtitles Available) My Laptop Display Won't Turn on - Duration 01:46

If they look fine, but you want to test more - you can respond to the video test by pressing the letter <N> and ePSA will then launch the LCD BIST test. If you have a no video issue, you can either run the <Fn+Power> keyboard shortcut to enter the ePSAs or <D+Power> keyboard shortcut to run the LCD BIST from POST.

Video (English Only) Test Your Laptop Screen - Duration 00:24

These 4 (four) issues are the most common reasons why you would be troubleshooting a problem outside of your Operating System.

They break down into 3 (three) outcomes :

  1. You identify a hardware issue that reseating does not resolve and contact us to arrange a repair.

  2. You identify a software issue and either resolve the issue or contact us for a resolution.

    • You can find out how to identify your warranty status from the article below.
    • How to Find Warranty Status and Information
    • You can contact us online through our various Twitter channels.
    • Video (Subtitles Available)Contact Dell on Twitter - Duration 01:36

    • You can find out about the changes to Dell Support and the latest contact information for us on the link below.
    • Video (Subtitles Available) Get Help from Dell Technical Support - Duration 02:22

    • There are diagnostic and logging tools available on the Dell Support Site or Contact Us.
  1. Just going through the troubleshooting results in fixing the fault, without a clear reason why.




battery and power support Visit our Battery and Power site for additional resources and information.

Monitor Support page More information and support for your Dell monitor, laptop or tablet screen can be found on our Monitor Support site.

Article ID: SLN292599

Last Date Modified: 07/04/2018 11:09 AM


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