Games no longer work

Like the title says, my games will no longer play on my laptop. I have no idea how this happened, and I've been searching frantically for a way to fix it, and the only possible answers I've found involve me having to open up my laptop, which I cannot do at the moment, and I don't want to have to resort to that.
It started when I tried to play Don't Starve. It was working last night, but when I opened it up today, I got an error. "Error during initialization", it said. I found it very bizarre, so I tried to update my graphics driver. I did that, and the problem remained the same. I tried fully uninstalling and reinstalling the game, and I still got the problem. I decided to try some other games, like Terraria and Psychonauts. What I got is as follows:

Spoiler: Terraria error

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Terraria
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No suitable graphics card found.

Could not find a Direct3D device that supports the XNA Framework Reach profile.

Verify that a suitable graphics device is installed.

Make sure the desktop is not locked, and that no other application is running in full screen mode.

Avoid running under Remote Desktop or as a Windows service.

Check the display properties to make sure hardware acceleration is set to Full.

Spoiler: Psychonauts error

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Psychonauts Startup Problem
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The game was unable to create the Direct3D device.

Please check to ensure your video drivers are installed properly.

I decided to check my Device Manager. Everything appeared normal. I ran Dxdiag, too.
Here's the file.

My computer specs are all in there, too.
But just in case I'll say the basics.
This laptop runs Windows 10 64-bit
My graphics card is NVIDIA GeForce GTX 860M.

I remember last night something very odd happened with my computer. My computer screen flashed, and I got the message that my graphics card crashed and was recovered. What's weird is that it happened twice in a single moment.
From searching online, it seems the problem is that my computer no longer recognizes my graphics card, which is odd because I was able to update my driver and the control panel still works. This computer is only a little over a year old. It can't be overheating, because I got it checked out back in July and they said my laptop was very clean.
I decided to open up GPU-Z and see if my graphics card was running. The problem seems to have presented itself here.
I have no idea what is going on. My computer says that the NVIDIA graphics card DOES exist. But it's not running at all.

Is there a solution to this that doesn't require me to take apart my computer? That is what I want to know. If there isn't any solution, then I'm going to take it to the store I got it from and have it checked out there.

 

Does it show you temperatures on the sensors tab in GPU-Z? Looks like a dead chip to me :/

 

...Nope. No temperatures.
I don't get it, how could it be dead after only a little over a year?

Wait, what I should be asking is what kind of replacement I should get. Can I get a new graphics card anywhere? Or do I need to go online to get the "good" ones?

 

Normally I would tell you to install Linux on a USB key and test the chip there but unfortunately Linux and Optimus don't get along well.

If you can backup your stuff and do a clean windows install or shrink your partition and do a clean 7 or 8.1 dual boot, I would test that.

As for the chip failing in a year... It happens... And unfortunately your chip is soldered to the motherboard which means you would have to get a whole new motherboard if it is indeed dead which is why I would try a fresh install of Windows first to make sure it's not another bug on the long list of Windows 10 problems

 

Your 860m is likely dead. I've encountered this on several machines.

 

What is with reliability these days... Hopefully OP has a warranty.

 

Oh gosh, so that means I can't just get a new chip, huh...
...I sure HOPE my warranty is still going. It's already been over a year since I got the laptop, and I don't remember if I extended it or whatever. It would be just my luck anyways.
Do you think you could explain the partitioning to me? I would look it up, but this sounds pretty specific so I'd like to have the exact instructions from you.
...I do have a backup drive, but I left it at home. I go home tomorrow so I can easily do that, but I plan on stopping by the store I got the laptop from on the way home since it's not out of the way. If I can try out this partitioning now I'd like to do that so I hopefully don't have to stop at the store.

 

Hmm TC it does sounds like your GPU died off. Hopefully you can have it repaired for a decent price in case your warranty has ran off. Contact your manufacturer and check your warranty.

 

Looked it up... My warranty has expired. Gosh darn it. I'm totally regretting not getting that extended warranty.
...Wait, the warranty started before I even got the laptop. I got it in July and it says it started in May. Well I guess it doesn't matter since the expiration date is about a year after I got it.
When you say I can have it repaired, can I have the option to upgrade the card, or will I have to stick with the same kind I have?

 

I see it's a Maxwell 860m, which is soldered. You will have to replace the whole motherboard. I see it's a Lenvo, but what laptop is it exactly?

 

Its actually not that complicated to install a second Windows.

http://www.howtogeek.com/214477/how-to-dual-boot-two-or-more-versions-of-windows/

What I would do is get a trial edition of 8.1 Enterprise so that you don't run the risk of invalidating your product key with Microsoft (its always a nightmare with activation and I have no reason to believe Windows 10 will be any easier). http://www.microsoft.com/en-us/evalcenter/evaluate-windows-8-1-enterprise

You only need to shrink I'd say 20-30GB off your partition since this is a test install. Just make sure you have enough room for the games you want to test.

I don't know if Lenovo offers the option to purchase a warranty extension like Dell does but no, an upgrade will not be possible if your system came with an 860M - that is unless Lenovo doesn't have a motherboard for that system anymore.

 

It's a Lenovo Y50. No touch screen. They told me it'd be a decent gaming computer.

Okay, I'll try this out and see how it works. Can I get rid of it whenever I want?
...Can I even downgrade anymore? I remember reading somewhere that you get a month to downgrade when you upgrade to Windows 10 (I reserved a copy when they were offering it), but I upgraded over a month ago. So if it does turn out that Windows 10 is the problem, I think I'm stuck.

You can purchase an extended warranty, but only before your base warranty runs out, so I can't do that anymore.

 

You should be able to get rid of it whenever you want by going to your old Windows install and deleting the new partition and expanding the old one back. I'd use EasyBCD ( http://neosmart.net/EasyBCD/) to remove the boot entry for the test Windows and that would also ensure that 10 would still boot. The most common thing with dual-boot issues is breaking the windows bootloader and EasyBCD makes it ridiculously easy. If you want you can use it before you actually do anything else to backup your current BCD and then just restore it after you delete the test Windows.

As far as downgrading, I am not sure how that would work but I think its highly unlikely that its a Windows 10 issue since a Google search pulled up a number of people with dead Maxwell 860Ms :\

 

So if it's not a Windows 10 problem, should I not bother with the partitioning? That was supposed to test to see whether or not the dead card was a Windows 10 bug or not.
...What am I supposed to do about getting a replacement card then? I don't want to get another 860M if it's going to inevitably die again. :\

 

Well a fresh environment can yield different results either way. You were asking for options before taking it to a shop and the first thing I would troubleshoot is another Windows install. It definitely does look like a dead card though.

All video cards have the potential to fail. Considering how popular the Y50 was/is, I didn't see an abnormal amount of failures. I've been through a few video card failures myself.

 

Oh, I see. That makes sense.
Since it's most likely a dead card, I think I'll just take it to the store and get the motherboard replaced.
I just didn't think the card would die so soon.
Thanks for the suggestions.