Multiple Pixel Colored Horizontal lines on screen

[TimmyTats]

hello, i have a HP omen 15-dc1047 and im having an issue where there are many different horizontal bars across the screen, these bars are RGB pixel colored, and they seem to move around and sometimes disappear from one spot but still cover most of the screen.

i have already tried updating bios, drivers and all updates from the hp support assistant, ive also tried resetting windows and that also didn't work. the only place that these bars don't show up is in bios setup, when booting up they show, in windows they show, but they dont show up in bios setup, they also dont show up in front of the omen symbol when booting up, only around it.

any help is welcome, thanks!

[ub6424]

Hello @TimmyTats 

Sorry to hear that you are having problems ... I would like to help you.

(1) Double check with external monitor connected via vga/hdmi cable.

Do you have the same error pattern on external monitor ?

- Power off external monitor

- Connect vga/hdmi cable

- Power on external monitor

- Power on notebook

(2) Please report your results

[TimmyTats]

Hello, it seems my laptop will not display to an external monitor, i tried the steps you said but the external monitor remained blank, i tried the monitor and cord with a different laptop and it did work so it's my laptop thats the problem, 

I'm going to try some more and see if i can get it to display to an external monitor 

[TimmyTats]

Here is what the screen looks like

 

 

[ub6424]

Hello @TimmyTats 

(1) Power reset your notebook with a non-removable battery:
- Turn off the computer.
- Disconnect the AC adapter.
- Remove memory cards from the card reader slot.
- Disconnect all nonessential peripheral devices, such as printers, scanners, external hard drives, and USB flash drives.
- With the AC adapter unplugged, press and hold the <power> button

for approximately 15 seconds.
- Reconnect the AC adapter, and then turn on the computer.

(2) Try HDMI Output again

Reference:

HP PCs - Troubleshooting HDMI display and sound issues

[TimmyTats]

It didn't work, i tried exactly that and I even tried a display port connector, here's some things i did find out though, it seems that when i plug in HDMI or display connector into the monitor and turn on the computer the monitor goes blank and thinks for a few seconds then returns to the no connection found message, which makes me think that it's trying to connect to the laptop and can get a connection but the laptop wont display anything on the monitor.

The second thing i discovered is that when i went to device manager, under display adapter the rtx 2070 adapter that is there has a yellow sign that says "windows has stopped this device because it has reported problems. (Code 43)."

Does this mean anything?

Thanks for your help so far

-tim

[ub6424]

Hello @TimmyTats 

Sorry to hear that you are having problems ... I would like to help you.

(1) Test your hardware Using the HP PC Hardware Diagnostics (UEFI)

--->>> Perform Extensive Tests

https://support.hp.com/us-en/document/ish_2854458-2733239-16

See section <Running HP PC Hardware Diagnostics UEFI tests when Windows doesn't start>

See how it works:

https://www.youtube.com/watch?v=14GKIpGPNRM

(2) Please report your results ( error messages, take pictures )

( if serial number, device id, UUID, System Board CT Number is displayed, please blur )

[TimmyTats]

I tried all the Diagnostics tests as you said and i also tried all of the diagnostics from the bios diagnostics and everything passed, no error messages, nothing. i still think it might be a software issue but Ive already tried everything. I think the GPU itself might just have broken or something, sadly I'm out of warranty, is there any other way i could get this solved or repaired by HP?