Thank you for all the useful information in this long thread. Successfully revived a relative's 330S-15ARR. Only fan and Power Button light came on. CAPS LOCK did not respond to key presses prior to fix. Novo button did not solve problem. Screen remained blank.

330S-15ARR
Ryzen 5 2500u, UK model
Model Name: 81FB
MO: PF9XB8C01091
MTM: 81FB002LUK
Mfg date: 18/12/01
S/N:
Factory ID: JVHFC1

I used the bin file from Post #27 and instructions from post #29 to transfer DMI data.

I purchased a CH341 programmer with all the...