I also tried with this clean bios but the problem is always the same. I explain the main problem of this computer: it arrived in the laboratory due to a lack of power and I found the two input MOSFETs in a net short, I checked that the 19v line was not mainly shorted and the primary and secondary power supply part are ok! So I changed the two MOSFETs and now the PC turns on... I see the power supplies on the CPU and GPU phases, all the voltages are there, the charging LED works, the battery is ok, in short everything seems perfect but the computer does not display! I thought it was a BIOS problem but apparently there is something else, any advice on how to proceed?