Alienware 17 R3 freezing in games

[paparazzo79]

Hi guys.
I own Alienware 17 r3 6820HK GTX 980M.
I purchased it recently tried some gaming (Rise of the Tomb Raider, Serious Sam) and after 10-15.min games freeze, but I could hear audio from game.
Now I am not yet at home, but when it happens I do get separate window error message and will post it later.
Then again there are moments when I could play for like an hour and no errors.
From my experience reading about this issue, this means my GPU is dying, correct?
I installed most recent nVidia drivers.
Temp of GPU while gaming is max 76 C, but usually around 72 C depending on load.
Could all this be a sign of lets say bad mosfet or some electronic component on grapics card?
This is error message I get while gaming.

[mon2]

0x887A006 : DXGI_ERROR_DEVICE_HUNG :: Rise of the Tomb Raider General Discussions (steamcommunity.com)

[paparazzo79]

It happened so far in 2 games, they just feeeze.

[paparazzo79]

So even it started issue (freezing) very soon after launching Unigine Heaven which was not the case before.
Now I did messed up something from one website advising what to do in case of this error, I believe I did add some reg value.
So one last thing to do is that I did removed latest installed nVidia driver with DDU and installled version from Dell website some older 4xx... version, and I ran Unigine Heaven and will leave it for an hour...wish me luck, so far so good.

[mon2]

Yes, as per the shared thread in post #2.

Released a new driver 445.87, it also did not have any problems when running Rise of the Tomb Raider

[paparazzo79]

Sadly it freezes with older driver, too...