Blink Screen Technology

I’m using Dell Inspiron 1420 and it has the blink screen technology which I’m not proud of it. The screen blinking problem started a few months after the warranty expired. I thought it would be expensive if I send the laptop for check ups, that is why I did not do so ( Yes, I’m a cheap ass). What adds up the fire is the attitude of the laptop, it ONLY blinks when I need to study for exams and stop blinking right after the exam ends.

I’ve searched for solutions to fix the problem. I found a few reasons causing the screen to blink like dat. Reasons such as graphic card error, cable error and OS error, but none was it. I met with this technician and he told me that it was most probably caused by the battery. Yes, my battery life span has almost reach the limit but I tried starting the laptop without the battery attached to it, it blinks too, so as my eyes.

So, what was the cause for the blinking to happen?