Nvidia 940m not displaying in device manager

[normanator2001]

So i just bought this laptop from ebay. Its the i5 version of the asus x555lb. It definitely has a 940m inside it as it even has the sticker on the laptop. But i cant seem to get it to appear in device manager. In the description of the listing it was mentioned that the 940m didnt have a driver. However when it came to installing the drivers the nvidia driver installer couldnt detect the gpu. Hoping someone can help. Thanks in advance

Aaron

 

[Solandri]

Optimus laptops (combo Nvidia + Intel GPUs) need a special driver which often isn't a part of the generic Nvidia and Intel driver releases. Check the Asus support page for the latest Intel and Nvidia drivers, and install those, not the ones from the Intel and Nvidia websites.

https://www.asus.com/Laptops/X555LB/HelpDesk_Download/

After installing them, you may encounter a problem where Windows 10 auto-updates newer video drivers which don't work. In that case, go to device manager, right-click the two GPUs, open their properties page, driver tab, and if the current driver isn't the one from Asus' website, roll back to the previous driver. I believe that's the method Microsoft finally settled on to prevent specific drivers from being updated. (I had to fight Win 10 updates for nearly a year when Microsoft removed the ability to prevent automatic driver updates in Win 10.)

There is also a small chance the 940m isn't showing up because it's dead. But I vaguely recall seeing the same thing you are (no Nvidia card in device manager) when I did a clean install of my Optimus laptop. Installing the laptop manufacturer-provided video drivers made it show up. You may want to check the BIOS settings too, as some laptops give you the option to select a GPU there.

 

[normanator2001]

Ok i will go install the drivers from the webpage and i will get back to you. Thanks for the reply

 

[normanator2001]

Optimus laptops (combo Nvidia + Intel GPUs) need a special driver which often isn't a part of the generic Nvidia and Intel driver releases. Check the Asus support page for the latest Intel and Nvidia drivers, and install those, not the ones from the Intel and Nvidia websites.

https://www.asus.com/Laptops/X555LB/HelpDesk_Download/

After installing them, you may encounter a problem where Windows 10 auto-updates newer video drivers which don't work. In that case, go to device manager, right-click the two GPUs, open their properties page, driver tab, and if the current driver isn't the one from Asus' website, roll back to the previous driver. I believe that's the method Microsoft finally settled on to prevent specific drivers from being updated. (I had to fight Win 10 updates for nearly a year when Microsoft removed the ability to prevent automatic driver updates in Win 10.)

There is also a small chance the 940m isn't showing up because it's dead. But I vaguely recall seeing the same thing you are (no Nvidia card in device manager) when I did a clean install of my Optimus laptop. Installing the laptop manufacturer-provided video drivers made it show up. You may want to check the BIOS settings too, as some laptops give you the option to select a GPU there.

After installing all of the relevant drivers i ran into a few issues on the gpu side. When trying to install the gpu the nvidia driver installer couldn't detect a gpu much like how windows cant. Besides from this i couldnt find a option in the bios for gpu
https://ibb.co/iHRNLz - what the nvidia installer is showing

 

[normanator2001]

In the worst case scenario and the gpu is dead or dying, would it still possibly show up even for a bit? Also i presume that these gpus are soldiered onto the motherboard and are not detachable (just thinking if the eBay seller possibly took it out if thats a possibility)