I have a Dell Inspiron 1525 and every now and then, when I open my laptop my screen will have a slight flicker to it, it is quite annoying. It probably only happens 10% of the time, but I want to fix it. I contacted Dell and at first they said that I needed to download something and that didn't help. Then they said I needed to tighten something but I didn't really understand. Can anyone enlighten me on what the problem may be?