line help???

the invasion of the red on my IBOOK

I have a red line going down a part of my screen. I dont know how to get rid of it I sure hope it doesnt have to do with the logic board I just had it sent in for a new logic board no more then a week ago

ok I really need help there is a red line going down part of my screen and I dont know what to do about it. I restarted my computer but it came back after a few hours I dont know what it is