Windows 10: Issues booting with a 4K external monitor

Okay, so I've been scouring the internet trying to find a solution for this issue that many people seem to be having as well but haven't found any fixes. Hoping someone here can help.



I recently got a Dell XPS 15 7590 second-hand (now I know what you're thinking - there's your problem - well it's not a major problem but something that I can't get my mind off). Now, this laptop runs beautifully on its own, with no problem whatsoever.

The issue arises when I try to boot the laptop up from a cold boot with a 4K external monitor attached (LG 27UD68). When I used my previous XPS 15 9550, the external monitor would instantly show the windows welcome screen and that would be that. But with the 7590, the external monitor just shows a blank screen and after a few minutes, the BSoD DRIVER POWER STATE FAILURE appears. It then restarts itself and it boots just fine from then but it takes a few minutes to go through that whole process which I don't have the time for.

I have tried using another HDMI cable as well as a USB-C to HDMI cable, when I used a 4K 30Hz USB-C cable that seems to resolve the issue but when I use a 4K 60HZ cable, the problem re-emerges.

I have tried reinstalling the display drivers and downgrading the BIOS but doesn't seem to be working.

The laptop boots just fine without an external monitor and if I then plug the external monitor in after the laptop has booted it works just fine.

I've also noticed when I used the 4K 60HZ usbc-to-hdmi cable, the external monitor shows white and black flickering lines, but not when I use a 4K 30HZ hdmi-to-hdmi cable - anyone knows why that is?



Not quite sure if its a driver issue, a Windows issue or a hardware issue.

submitted by /u/michaelnkm
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:)

 

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Windows 10 upgrade: can no longer connect to an external monitor

Hi,

Thank you for posting in Microsoft Community, we appreciate your interest in Windows 10.

I understand the inconvenience you are facing with accessing the external monitor in Windows 10, we will help you with this issue.

As you have tried most of the troubleshooting steps, let us know the following to assist you better:

• What exactly happens when you try to connect to the external display?
• Were you able to see the light on the external monitor (Tuned on/ not)?
• Is there any error message with this issue?

Step 1: As this may look very silly, I suggest you to check if the turned on or not, if it is on let us know the color of the light displayed.

Step 2: I suggest you to remove all the external devices except mouse and keyboard and try to perform clean boot to check if there is any issue with the device and to avoid any third party software conflict.

Disclaimer: Putting your system in
Clean Boot state helps in identifying if any third party applications or startup items are causing the issue. You need to follow the steps from the article mentioned below to perform a Clean Boot.

How to perform a clean boot in Windows



(Applies to Windows 10 as well)

Note: Refer "How to reset the computer to start normally after clean boot troubleshooting" to reset the computer to start as normal after troubleshooting.

Hope it helps. Please perform the above methods and update the status of this issue, we will be happy to help you.