i have lenovo y410 laptop.
some black diagonal lines have come on the screen of unequal lengths. they r looking like the similar lines that are sketched by the needle of measuring the earth quack or the heart beats! but lines are not connected. they r in the upper right corner and coming down one fourth of my laptop screen. if i turn off my laptop...these lines are still there. can anyone tell me ? what are these? and now do i ave to purchase new monitor?