Hello,
I'm having the same problem as you: no image, even though the PC seems to boot normally.
I hope this helps someone, as I've solved my problem.
If you've read this thread, try reprogramming the BIOS. You've checked, as others have indicated, that DIMM_only is enabled (presence or absence of resistor on the motherboard). So you may have the same problem as me.
At the SODIMM slot where the memory stick is inserted, the pins at the ends (left and right) were unsoldered.
A solder point, and the PC works perfectly.
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