sorry the image does't work anymore, it was more than 3 days to the server removed it
the specific issue of updating the bios was resolved
the titular issue of error 10000050 doesn't seem to appear anymore
HOWEVER
computer couldnt start properly and i had to remove a memory card (that is, downgrading my pc from 2ram back to1ram, as it was 10 years ago) before it could start.
I suspect this is power issue and i think there is an option in mios to solve it
i dont know what option it is tough, and i cant set the bios when the extra ram is inserted