I think my graphics card broke, not sure yet.

[Catalin_3]

Hello, everyone.
I have a Lenovo M5400 laptop(i5 4200M, 8GB RAM, GT 740M).
The story would be: 5 hours ago I was on youtube watching some stuff. Suddenly, I got a crash(a.k.a. bluescreen-I was running windows 10) with the error message "video_memory_management_internal". Ok, I had, and I still don't, have no idea what that was. It booted up and I tried to check what happened and if there was something that was "eating" my VRAM, so I ran GPU-Z. There comes the surprise: there is only the integrated video card. It was not showing itself in Device manager either. I kept browsing but I didn't find anything about "got a blue screen, video card died". Then I decided to reset W10 from the recovery settings. 1h of waiting and still no dedicated video card. After more trying to understand what happened, I decided to go back to W7 so I installed it. Nothing happened. Still no video card.
I'm desperate. Please, tell me what happened and if I am able to solve the problem.
Thank you!

 

[shadow187]

Not familiar with the laptop in specific, but can you go into the Bios (usually F12 or DEL on boot) and see if there's any settings regarding switching graphics adapters? Make sure your discrete card is selected.

 

[Catalin_3]

This is the only thing related to graphics: http://imgur.com/kAuVgdZ .

 

[shadow187]

Hm.

So I'm not familiar with how this _should_ appear, but I do know that laptops with a discrete and integrated card will switch between one another in order to save power. For instance if you're just watching Youtube videos, the more powerful card will remain off in order to extend battery life. This may be what you're seeing.

When you reinstalled the operating systems (10/7), did you make sure to reinstall the discrete card's drivers from the manufacturer website?

 

[Catalin_3]

Hm.

So I'm not familiar with how this _should_ appear, but I do know that laptops with a discrete and integrated card will switch between one another in order to save power. For instance if you're just watching Youtube videos, the more powerful card will remain off in order to extend battery life. This may be what you're seeing.

When you reinstalled the operating systems (10/7), did you make sure to reinstall the discrete card's drivers from the manufacturer website?

I know about the switching. I've been using this laptop for 1 year so I figured out how that works. The problem is that it looks like the only card "connected" to the pc is the Intel, the Nvidia one should have also appeared in the Device Manager. I installed the drivers for everything(there's only some USB one I can't find), I checked for the Nvidia installation folder too, everything is there, but there is still no news about the card. That's why I am scared, because I think that it got kind of...fired, and I can not even understand why and how.