820-01521 no boot

[thomamagic]

hello
please i have mainboard 820-01521 with no boot
L7030 with thermal is 43° celsus but machine enter in dfu correctly
when i restore i have error message and no picture, no logo
i have 1.770A with usb c alimentation
thanks

 

[thomamagic]

for information no water liquid damage, machine works normally before and stop

 

[thomamagic]

i have this message : restoreOS device removed before restored completed