Satellite C55-A-16Z - graphics card does not work after BIOS update

Hello

I have a portable Satellite C55-A-16Z with windows 8 and a Nvidia geforce 740M graphics card.

Last week he asked me to update the version of the bios at 1.30.
The bios update was successful.

However when I restarted my laptop I started having a BSOD dgxkrnl.sys.
Correction of the error and restarted for an another BSOD Windows, and after the second solution, I stopped making BSOD.
But now, I noticed its games running, if not use the dedicated card, but use the 4000 Intel.

In the settings Nvidia dedicated card is configured to be always on.
It seems that my card is missing, but it appears in Device Manager.
I tried to delete, update the drivers and the default factory reset, but nothing helped.

Also, when I go into Options power the Intel card is listed and when I disable the card intel in the Device Manager it starts to use the graphic viewer for windows.

How can I get my Nvidia card to work again?
Any help is appreciated.

Thanks in advance.

Hello

After the BIOS update the BIOS should be set to default settings.
You can do it in the BIOS.

In addition, you mentioned that Windows 8 is still installed on your laptop.
8.1 to win has already been published by Microsoft and I highly recommend that update you the system of 8 to 8.1 Win Win.

Before you start the upgrade to 8.1 win, you should check and read the instructions step by step for Toshiba: http://www.toshiba.eu/innovation/generic/windows8_1-message/

I guess that after the Win 8.1, nVidia graphics card upgrade works well also.

Your comments would be greatly appreciated.

Tags: Toshiba

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