My mcbook pro has thin vertical red line colour when I turn on, any recommendations to fix this problem. TY in advance...

I have this MacBook Pro, 13" 2.8 GHz Intel Core i7 w/ 4 GB 1333 MHz DDR3 Memory since Nov. 2011. I regularly used it up to last quarter of 2013. On 2014, I seldom open it because I bought MacBook Air for it was easy to bring anywhere than MacBook Pro. Suddenly, when I have to use it ( My MacBook Pro ) last February 2015 and when I push the power on, a thin red vertical line appeared on the middle portion of its' LCD screen. How can I turn my MacBook Pro LCD screen into hassle free monitor? Any recommendations from the Apple Group & from the Apple Community? TY in advance.

Attached is the Screen Shot taken lately.

Jupiter