Games keep crashing if started using NVIDIA GPU

[Xerlian]

Lenovo Thinkpad with core i5 and Nvidia GeForce 940mx running Windows 10.
Some time ago games started crashing after being launched. I've spent two days updating and downgrading drivers (now everything's uptodate), searching for solution etc., and that's what I've figured out:
1. Task Manager shows no GPU in "Performance" tab. Not Nvidia, nor integral one.
2. BIOS itself only sees integral graphis.
3. Simple games, like Heroes of Might and Magic 3, work perfeclty.
4. Nvidia control pannel works perfectly well. It can see the main GPU, it's possible to manually set a programm to use Nvidia GPU, but it doesn't help.Well, generally doesn't. The only thing it allowed me to launch this way was Divinity: Original Sin, but no other game.
5. If I launch a game with integral graphics, it works without any problems, but, obviously, without normal framrate.
6. If the game is launched with Nvidia GPU, it loads its screen, and then crashes with "Human.exe stopped working. There is a problem that caused the program to crash. Close this program." I'm using russian Windows, so it's a translation of the error message, but it is as informative as the message itself: "Something's broken lol".
7. Minecraft behaves interesting. It loads "Mojang" loading screen, the progress bar stops at the very beginning, and then, by sonunds, it's possible to understand that the menue is loaded. But if any button is pressed or the window is resized, the game crashes instantly.
8. I'm so damn tired of this stupid piece of hardware. But I have no choise but to keep fighting and would be grateful to everyone who helps.

[MrUnclean]

Honestly, unless it is just extreme overheating that has already caused damage or some kind of weird malware/virus, it sounds like it is just a GPU or a motherboard problem. Crashing and not working properly mostly predisposes towards that direction. If you have also been getting artifacting then it is almost definitely that.

Open device manager on your windows, go to display adapters and check if your GPU is disabled or enabled. Sometimes it can be disabled automatically in cases of overheating. If the GPU doesn't show up there and neither in the BIOS as you have already said then the problem is probably more substantial. You could try to make sure your BIOS is up to date and update it if needed although I have no idea how you do that so you will probably have to look into it. If that isn't the problem then I guess if you've got nothing to lose you could do a hard reset to make sure nothing software-wise is interfering with the GPU itself. If that doesn't work either then most likely it is just an issue with the GPU or the motherboard (maybe even RAM and CPU) and you will probably need to see a technician. Hope you manage to sort it out.

[Xerlian]

Originally posted by MrUnclean:

Honestly, unless it is just extreme overheating that has already caused damage or some kind of weird malware/virus, it sounds like it is just a GPU or a motherboard problem. Crashing and not working properly mostly predisposes towards that direction. If you have also been getting artifacting then it is almost definitely that.

Open device manager on your windows, go to display adapters and check if your GPU is disabled or enabled. Sometimes it can be disabled automatically in cases of overheating. If the GPU doesn't show up there and neither in the BIOS as you have already said then the problem is probably more substantial. You could try to make sure your BIOS is up to date and update it if needed although I have no idea how you do that so you will probably have to look into it. If that isn't the problem then I guess if you've got nothing to lose you could do a hard reset to make sure nothing software-wise is interfering with the GPU itself. If that doesn't work either then most likely it is just an issue with the GPU or the motherboard (maybe even RAM and CPU) and you will probably need to see a technician. Hope you manage to sort it out.

Well, the GPU is enabled in device manager.
I've reinstalled Windows. And this didn't have any effect...
Seems like it's really a hardware problem. Thanks!