Dell Inspiron 14r 5437 Screen Flickering Issue

I just purchased a Dell Inspiron 14r 5437 laptop online and had got it a week ago. I was able to use it normally a day or two after I first booted up the laptop. After few days from the first boot, I started having issues on random flickering screen. At first, it was a random flicker, and then the issue got worsen when the screen went fade out and turned dark. I was force to restart my laptop halfway when I was doing something important. Even now, when I'm writing this question, the screen went blank several times, and it's seriously annoying.

I wasn't expecting this from a reputable computer company. Some say it's a hardware issue, while some suggests it was a video card problem, hence I uninstalled the nVidia graphics card driver in Windows. Things seemed to look fine, yet I was disappointed again when the issue happened again. As I'm using this laptop for my IT studies, I greatly needed this laptop all the time.

As the screen flickering problem happened at random and instant, I was unable to get an exact snap of the situation, hence I borrowed some videos from a YouTube user who is using the exact same model as mine.

Video 1:

Video 2:

Please advise on this matter.