Horizontal Lines display while starting and desktop not showing up
My Macbook pro is early 2011 make, Since last 10 days randomly it shows horizontal colored lines and also desktop don't show up. Than I put it on charging adapter and press on button and press option+command+p+r button all together and after three noises it starts normal and remain normal for while.
I am very confuse, do I need to visit Apple service centre or it can be fix at home.
Thanks in advance for help!!!
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