Windows 10: The problem is with a nvidia driver nvidia GeForce 840M where it always has this alarm...

i have been tryingto fix this problem for 4 HOURS STRAIGHT. I searched for problems using dxdiag windows run command and tried every way to fix it with ssolutions for error code 43. Nothing worked, i tried youtube and the microsoft website. I don't know if this is related but it says that my driver is not digitally signed, i dont know what that means and i would like someone to explain to me what it is and how do i digitally sign a driver?i have tried so many youtube tutorials. .I have also tried to add the hardware using the disk and choosing the file called nvac but nothing worked it would

:)

 

Nvidia GeForce 840M driver problem.

Hi All,

I have a problem with my Nvidia graphic card , GeForce 840M. It keeps saying error code 43 eventhough I have updated the bios, uninstall and reinstall back the driver, and reinstall back the driver from nvidia. My laptop is originally equipped with windows
8.1 single language. This thing happens after I have updated my laptop to windows 10. I have tried uninstalling the driver many times, but no luck.

And also, some games cannot be opened, and some games can be opened, but cursor not appear, such as in my Cities XL game. How to solve this problem? This problem making me worried sick. My specification of my laptop are as follows:

Intel core i7 4510U

Ram 8GB

Nvidia GeForce 840M graphic card.

Hope you can help. thanks.

 

Nvidia Geforce 840m Problem


Hello.
I have bought a Lenovo Flex 2 and installed Windows 10 Enterprise 64 bit on it. My laptop has Nvidia Geforce 840m GPU. I have downloaded the latest version of drivers include main driver and Game Ready drivers:

358.50-desktop-win10-64bit-international-whql (Game Ready Version)
352.84-notebook-win10-64bit-international-whql

But I have problem in running graphic games like call of duty an need for speed and etc.
When I checked display adapter properties I saw that the graphic card didn't detected and Microsoft Basic Display Adapter is default and my geforce VGA is not listed.
Here is screenshots of my problem.









However I have installed my graphic card successfully bu Geforce 840m is not detected as my default VGA adapter. Thus I have various problems such as:
-Games are not running properly
-Screen brightness function control (F11 and F12) didn't work
-and so on ...
Please HEEEEEEEEEEEEEEEEEEEEEEEEEEELP me

 

nVidia - Graphics Adapter WDDM2.0 - NVIDIA GeForce 840M will not fully install





As of recently, my laptop's Nvidia graphics card has stopped working for unknown reasons. On the Device Manager, it is showing up as a "Display" in the Other Devices section but for brief periods of time does show up as Nvidia 840M. Poking around for the
following possible solutions has led to no avail:

• Selecting "Update Driver" for the card in Device Manager: Returns code 28
• Installing the 840M driver from Nvidia's site or through Geforce Experience: Both fail, not providing reasons.
• Uninstalling the entire driver (it becomes renamed to 3D Video Card or something of that sort) and attempting to install drivers: Fails.
• Updating Drivers in Safe Mode with Networking: The Windows Update menu in settings refuses to open, automatically closing out.
• Clearing all traces of Nvidia files, programs, drivers, and registries then attempting to reinstall the WDDM 2.0 driver through Windows 10 updates: Card still not functional.
• Various utilities including Windows Update Troubleshooter, chkdsk, etc.: No noticeable changes.

Laptop: ASUS X550LN with Geforce 840M, Windows 10

Edit: Using sfc /scannow in conjunction with update troubleshooter and DISM has allowed me to reinstall the Nvidia drivers successfully.