No output to integrated screen after Ryzen 7640U mainboard upgrade

[Ruffin]

Ugh. Looks like this chip has had more than its share of problems. Eg

• [Solved] Framework 13 AMD (7640U) randomly goes black and become unresponsive - #7 by jihem
• Framework 13 (AMD 7640U) Boot, stability and drivers problems - #5 by MaxR