Windows 10: 2-GPU NVIDIA GTX295 (Driver:342.01) Suddenly Shows Only 1 GPU Active

In my rather ancient system I've been happily using both GPU's of my GTX295 for years (10+) and suddenly this week I only see 1 core registering in Nvidia Control Panel and Device Manager etc.
As I never got any temperature alerts I can only assume 1 core has failed. I've uninstalled/reinstalled the driver. Am I right?

Remaining core is happily running at 60 -80C. Windows is totally up to date: 20H2 v19042.782

Sorry, just realized this should be in the next section. My bad.

:)

 

BSOD after the NVIDIA GPU is activated

For the past month i've been struggling with an issue on my laptop, related to its GPU.

Whenever my NVIDIA GPU and the Intel GPU are activated, and the NVIDIA GPU isn't under stress for about 5 minutes, (by "under stress" I mean using programs that require detailed graphics and a lot of graphical processing) the BSOD will appear showing the
message error "NMI_HARDWARE_FAILURE".

Somehow I've tackled the issue of the BSOD by deactivating the NVIDIA GPU and solely use the Intel GPU, whenever I feel the NVIDIA GPU isn't required for my actions.

Even so, it is annoying to have to activate/deactivate the NVIDIA everytime i need it.

I have already used programs such as WhoCrashed and BlueScreeView to understand better the causes of these crashes. Those programs say that the leading cause of the BSOD are the files "hal.dll", "ntoskrnl.exe" and "PSHED.dll".

I would like to know if there is a way to correct these errors and how should I proceed to correct them.

My laptop specs are:

Acer Aspire 7 A715-72G-79XK

CPU: Intel i7-8750H

GPU: Intel UHD Graphics 630 and NVIDIA Geforce GTX 1050

RAM: 16GB

 

Power Saving Gpu and High Performance gpu are same (Showing Intel r HD graphics in Both)

have 2 Gpus Intel r HD graphics and Nvidia 310m but there it is showing only Intel r Hd graphics in both power saving and high performance gpu. I have added those application I want to run in nvidia control
panel to use nvidia gpu but when i open them it still lag and i dont think it is using nvidia's Gpu, I decided to search the internet and found nothing but graphics setting to choose a gpu for an application to run but there it is showing Intel r hd Graphics
in both. Can anyone fix it ?? My PC Specs

1. Processor- Intel i3 m370
2. Integrated Gpu (Intel)- Intel r HD Graphics
3. Nvidia Gpu- Nvidia 310m
4. OS- Windows 10 1909 Pro x64
5. Ram- 4 GB

Feel free to ask me other things about this.

 

Screen goes black on NVIDIA GPU 1 in apps.

In my device, there are two graphics processing units one is Intel(R) UHD Graphics 620 as GPU 0, and other is NVIDIA GeForce 940MX as GPU 1. In most of applications and games, when I switch GPU 1 and start to use the app, the screen goes black. But still
apps continuous to run, as detected from there sound effects.