I had the same symptoms but with the AI 300 series ( New AMD AI 300 DIY, powers on but no display, status LEDs 12 green, 10100011 (0xa3) blue/green ). tl;dr it may be the memory even if all the specs match.
The RAM I bought matched the advertised requirements, but when I traded RAM modules with a friend who had the exact same model and configuration (Kingston KF556S40IBK2-32), the display/everything started working (well, there are other issues, but separate), and his framework 7040 series still works, so it’s not like the RAM I bought was simply dead.
I wish to detail my experience further. The 11th green code is supposed to mean “DDR initialized OK” ( Framework Laptop 13 Blink Code Diagnostic ), but in a support ticket they suggested RAM was an issue. I had given them the model number and even a direct link to the spec sheet showing it matched their requirements exactly - native 5600MHz (What DRAM/memory is supported by Framework Laptop 13 (AMD Ryzen™ AI 300 Series)?), but they still tried to hit me with the “It seems that the RAM sticks you are currently utilizing do not meet the correct RAM speed/specs”.
They could have told me that it was just general manufacture/model incompatibility - I get it, but to say it didn’t meet the correct speed/specs was just lying to my face and hoping I didn’t know better. When I pressed them on it, they tried to dodge the question, saying my model of RAM was not one of the verified models, but that’s different from saying it “[did] not meet the correct RAM speed/specs” (at the time of the ticket and at the time of this post, the link above says “We do not currently have XMP memory support on the Framework Laptop. We recommend using DRAM that natively runs at DDR5-5600 speeds. While XMP memory should safely fall back to a slower speed, we have seen customer reports of some XMP memory modules not booting”). I continued pressing them on it, which they eventually admitted that they made an error and the memory I had and “Your memory does meet the advertised 5600MHz specification”, which, I do appreciate over nothing.</end rant>
After many many annoying tests - trying one slot, trying the other, one stick, the other, etc. I eventually found out/confirmed that the RAM I borrowed from a friend, who had the same model and configuration of RAM but in a framework 13 7040 series, worked in my laptop under any configuration
At that point I thought I had bought a dead RAM unit, but even more surprising is his laptop worked/works with the RAM I originally bought, and in any configuration.
Framework offered to send me a new mainboard - and display since the connector seemed about to break - which I appreciate and that part was straightforward and hassle-free. (The original mainboard and display were returned of course).
I was optimistic, and even carefully recorded the whole process when I received and replaced the mainboard and display. Unfortunately, when I booted it up with my original RAM, the display was still blank. In the end, I just swapped RAM sticks with my friend and let the ticket close, since I was done trying to debug it.