Graphics card driver crash

[BloodyEll3]

Hello guys.
Today after I came back from some errands I decided to boot up my computer (which was completely fine in the morning and the evening before) and I got stuck in a Welcome screen. So I decided to "hard reset" with reset button. Again - got stuck so I did it again and the third time it worked. When I booted up into windows I discovered that my nvidia gpu driver has been crashing the whole time. So I naturally decided to reinstall it completely and get a new one. So far everything was looking fine, even the lags in windows were gone. So just to be sure I decided to run csgo. It was loading very slow at first but afterwards it fine just had a little freeze in the middle of the map. So I turned off the game and tried it again after like 5 minutes. This time everything loaded fast and as soon as the map loaded and I decided to walk it froze really badly. Then my computer rebooted and I discovered that I got BSoD

HW: i5 4590, GTX 970, 8GB RAM, 650W

 

[BloodyEll3]

I think I may have resolved it? Not really sure. But so far everything seems fine. I have tried some "stress tests" and nothing was crashing.
I thought it could've been disk at first but after trying it out with another one I saw that the crashes and BSoDs are still happening. So I took out the GPU, checked the dust in the GPU, took my brush and gently dusted it off and blew a few times in it. Put the GPU back in and so far everything seems fine. Will see later how it all works.