Lenovo P50 - nvidia issue - how to reset bios?

[x16]

My P50 has a faulty nvidia graphics card. It only works with intel. I installed Windows and it works fine withe the intel graphic.
Then i switched in bios under config->graphics device from "hybrid graphics" to "discrete graphics". Now i have no picture.

I reset the bios over shorting cmos battery, but still no picture. So i need to change the grapics setting back to hybrid graphics again.

I need a way to make bios changes over bios dump. Is that possible?

[totoFR37]

I saw that on the HP computers, switch off the hybrid mode will put the biggest GPU always ON and stop the discret graphic.
It seem this problem is well know for bricking these computers.

But anyway people seems to have good result updating the BIOS for the lastest revision.

Is you computer starting and just showing any pictures ?
Or nothing is moving (brick)

it's useless to try to use the HDMI port.
But maybe if you plug an USB-DVI or USB-HDMI converter on the side USB you will probably get something, that will give you an access.

Was the nvidia recognized by the motherboard before the bios change ?



there is a big thread on the official Lenovo Forum :
https://forums.lenovo.com/t5/ThinkPa...286292?page=26

hope this can help.