What to do with lines on the screen

Hello! I have a problem on the screen of my Toshiba Satellite (M70-144). It has lines coming down in a block about 3 inches wide. Another block of lines again about 3 inches apart from the 1st one. I changed the screen resolution up to high 32 and got more lines instead. When I moved the mouse to slide up or down the page, it would leave a red trace. Any fix for this?
