Laptop 13 7640U(2.8K Display) will not start, display dead

Community Support
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Hi there,

yesterday I was compiling a larger chunk of code on my Laptop 13 7640U running Fedory 41 (which I bought in december 2024) when after approx 2hours both displays (external via USB -C and internal) froze and the device got unresponsive. The 3 Months before, the device worked flawlessly.

I hit the power button to force shut off the laptop, this worked, but since then the laptop won’t start again.

The laptop powers on, after approx 1min there is a blinking sequence on the LEDs, after that the fans spin moderately, the power button is light up, but the display shows no picture at all. Also connecting the laptop via USB-C or HDMI to an external monitor shows no picture.

The blinking sequence is (w= white, g=green, o=orange, b= blue):

w|gggggggggggg|o|gbgggbgg|w

I only found a resource for the meaning, it refers to the Intel version of the Laptop 13, but assuming the codes are alike, it seems the 12 tests go well an I get a post code of 0x44 which according to another gist which I am not allowed to linkt to as a new user this means “Setup SMM ACCESS service” - which I do not understand.

I also tried:

  • Resetting the Mainboard by tapping the SW3 10 times for 2 Seconds
  • Removed the RAM, which gave me the LED Sequence showing “faulty” DRAM
  • Inserted the RAM again, resulting in the LED sequence before, (everything fine)
  • Disconnected the battery, started on AC only
  • Charged the device over night, tried again to no avail

I opened a ticket with support yesterday, but I am really out of ideas here, so if someone has an idea that would be great.

Thank you,

Frank

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If you have multiple sticks of RAM, try booting with only one inserted. Try both your RAM modules individually in this way (if the first one you try works, then you could also just assume that the second one is bad)

However given your POST code suggests good RAM, I would doubt that its the problem.

Also, SMM apparently means “System Management Mode” (source + brief definition)

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Hi,

thank you for your input - tried this in all possible variations, sadly no success.

Frank

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I would probably wait to hear back from support then. I have no other ideas.

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Hi,

after careful evaluation with the framework support, they sent me a new mainboard. After switching the mainboard everything works fine again, so I assume the board died under the continuous load two weeks ago.

I mark this topic as solved.

Thanks for all answers, thanks to the really helpful framework support,

Frank

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