How to fix Dell XPS x8900-8756BLK desktop computer that starts but with blank monitor [Troubleshooting Guide]

  • Understand why a powerful computer like the Dell XPS x8900 starts up but doesn’t have display. Also learn how to troubleshoot it when this kind of problem happens to you in the future.


The monitor displays whatever the tower is feeding it but there are times when the latter starts normally but the former doesn’t display anything. Such issue might be caused by broken cable or a general problem with the monitor itself and it happens more often than you think.

So, in this post, I will tackle this problem having the Dell XPS x8900 as the subject of the troubleshooting as I’ve known a couple of owners who have been bugged by this issue. If you own a computer like this, I suggest you continue reading as it may also happen to you sooner or later.

However, if you found this post because you were looking for solutions to a different problem, then feel free to contact us by completing our computer problems questionnaire. We offer free support to our readers but you have to give us the information we need about your computer and the problem so that we can also give you accurate solutions or draft a practical troubleshooting procedure for you to follow.

Troubleshooting Dell XPS x8900 that turns on but with blank display

While we want to help our readers fix the problems with their computers, there are issues that we just can’t fix online. More often, they are hardware-related issues that require a technician who can do hands-on troubleshooting.

So, the purpose of this guide is to walk you through in ruling out possibilities and hopefully find the culprit. Once we know what the problem really is what caused it, then we can formulate a method that may fix it. With all that being said, here are some of the most practical troubleshooting steps you can do:

Step 1: Check the power indicator of the monitor

Every monitor has it so owners can easily tell if it’s powered on or not. So, if the LED indicator shows it’s on, at least, the problem is narrowed down to cable issue or monitor problem. However, if the indicator isn’t lit, then here’s what you have to do:

  1. Unplug the monitor’s power cable from the outlet.
  2. Make sure that the power cable is properly fitted in the power port in your monitor.
  3. Plug the power cable into the outlet.
  4. Switch on the monitor.

If it turns on, wait for about a minute to see if it displays what the tower is feeding. After such time and there’s still no display, reboot your computer; you may press and hold the power button on the tower for 5 seconds to force reboot it. If you have turned the volume of the speakers up, you will hear the audio that is played when the computer is booting up. With it, you can tell if the computer successfully started and if the monitor still doesn’t display anything, try this:

  • Properly check the VGA or whatever cable you’re using to relay the feed from the tower to the monitor.
  • You have to check the end that’s plugged into the monitor’s port as well as the one that’s plugged in the computer’s port.

Step 2: Use a different monitor if possible

You can immediately tell if the problem is with the monitor or not because if the other monitor works fine and the first one does not, then it’s time you considered replacing it. But before you actually do that, you may also try to swap cables for both data and power to see if the first monitor works. If it’s still the same, then it’s confirmed that the problem is with the monitor. Either it’s with the hardware itself or just some settings. Computer monitors can actually be factory reset so depending on the monitor you’re using, press the appropriate buttons to arrive at an option that allows you to reset it. If the problem remained after the reset, then you have a choice to either replace it with a new one or have a technician take a look at it to know if it can still be repaired.

Step 3: If the other monitor doesn’t work either, check the video connectors on your tower

There are times when a pin gets bent so the video cable can no longer relay the data to your monitor. Try to check the connectors on your computer; disconnect the cable first and physically check if there are pins that got bent. If there is, you try to straighten it up using a pair of tweezers or anything that could fit. If you had straighten up bent pins, reconnect the cable and make sure it’s firmly connected. If proper contact is established, the monitor should already have display, otherwise, continue with your troubleshooting.

Step 4: Find and reseat loose internal components

You don’t need advanced knowledge with computer hardware to do this step but if you’re not really comfortable opening the tower and verifying some components are loose, then don’t proceed. Instead, bring the computer to a local shop and have the tech take care of the problem for you. For owners who want to take a shot, however, follow these steps:

  1. Unplug the power cable from the wall outlet or regulator.
  2. Disconnect the video cable and the LAN cable if you’re using wired connection to your router/modem.
  3. Disconnect the cable of your keyboard and mouse or any cable that’s connected to the tower.
  4. Remove the cover to reveal internal components; you may have to remove some screws to do so.
  5. Gently press down on the outside edges of video card and memory modules to make sure they’re snapped right in. Don’t press too hard nor touch the circuits to avoid static transferring from your body to the components.
  6. Also gently press down the connectors of the flat ribbon cables to seat them properly.

Step 5: Reconnect computer cables and turn the PC on

After making sure no loose components inside the tower, connect all external cables again and make sure they’re properly connected and once everything is in its place, try to turn the computer on again. If the monitor still displays “No signal,” the graphics card might be at fault. If you’re comfortable doing it, you may try removing it and run the computer without it to know if it’s capable of doing so. If so, then the graphics card needs to be replaced or serviced.

On the other hand, if the monitor displays the first startup screen, it might not be a hardware issue but a problem with the operating system.

Step 6: Have the hardware serviced

There are tons of things and troubleshooting procedures we can do but without a guarantee the problem will be fixed and as far as an average owner is concerned, you’ve done what you have to do to try and fix the problem to no avail. Therefore, it’s time you have a technician take a look at it or you can bring the tower back to the store where you bought it and have it serviced.

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