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May 16th, 2025 01:53
m16 R2, vertical coloured lines on external display
Have had an odd issue that seems may be video card related, where my m16 R2 wouldn't turn on and the lights were flashing 1 red and 8 blue (no fault code for this combination). From googling and on here I am not alone, no official answer but general consensus is display driver possibly. Mine happened after swapping from 49" widescreen to normal 27" screen for a few minutes then put to sleep then wouldn't start. Only way to start it was hold power button for 10 seconds with no power supply connected.
Hasn't done that again, but yesterday I put it in sleep as I do when I finish work, next morning woke it up and it appeared to be doing a full boot, looked like it may have done an update overnight. When it booted, right third of external monitor was vertical lines and appeared that the NVIDIA 4070 was not running the screen (no monitor program, when I opened the program it said nothing connected). So that would have been the internal graphics card.
A reboot of the laptop fixed it, however I am concerned that this is now 2 graphics related issues and my 12 month warranty has only a few weeks left. Of course I can't replicate any of the issues.
Thoughts? 🤔
mattyb3
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May 16th, 2025 03:22
Are you getting any lines on the internal display or is it just the external? If it's just the external then it could be the display cable or the monitor. I have definitely had similar things happen with a faulty cable.
If the 1-8 code was actually a 2-8 code then that would be, 'Display failure - EC detection of power rail failure'
I would definitely contact Support and lodge a ticket before your warranty runs out. If you can prove that there was a hardware issue before the end of the warranty then you should be covered. If you wait too long then you're going to have a hard time trying to get it fixed, if it is a hardware issue.
AndAroundWeGo
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May 16th, 2025 05:07
@mattyb3 the fault was definitely 1 red 8 blue, an undocumented error .. fault was on the external display, I didn't open the laptop to see if was also on the inbuilt, I rebooted and it cleared up. Will have to keep an eye and may have to take out extended warranty to be safe
mattyb3
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May 18th, 2025 22:13
@AndAroundWeGo Definitely check the laptop monitor to see if it's happening on that one as well. If it is then it's either a display or GPU fault and an extended warranty is probably a good idea, if yours is close to running out. Contact Support before it runs out though.