Last time my window was not genuine, so i used a program to make it genuine....Then when i restart my laptop, problems occur. Everytime when i move down a very long page, it not normal as there is something like waves shape. It make me really really headache...I dont know how to describe properly but i hope some of u who know bout it can add me in messenger... keithlee1991@hotmail.com

Have you purchased your windows or made it genuine through some cracking software? Anyways it seems like the problem is with your video card driver .. see if it's working. If not, then reinstall it.

Ya....I use an illegal program to make it genuine..Does it really affect? Anyway my graphic card got problem as i cant even find the driver for it...

It might be scrolling too fast for smooth scrolling. Turn off smooth scrolling.

Most probably the problem will be solved if you install the graphics card driver.