GPU not working after vbios update

Aug 22, 2018
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Hello,
My little brother owns MSI GE62 6QF gaming laptop
GPU : 970M
he was messing around and trying to increase his GPU power and updated the VBios with an incorrect version , laptop did not work after that , but i managed to get in the safemode and disable the Nvidia drivers , and then i deleted Nvidia drivers With DDU (Display Driver Uninstaller) , updated the Vbios with the original vbios, and still its not working , the issue now is when ever i try to install nvidia drivers the laptop just freeze, and i managed to install Nvidia drivers through using the safemode installation was successful but i couldnt boot to the laptop , so i had to go to safemode and disable the drivers , the laptop now running on the intergrated Intel GPU, but no way to access Nvidia gpu without crashing the laptop.

Please if anyone can assist me with this issue that would be very appreciated