Laptop screen stays off after resume
I just got this laptop from my aunt after her business gave her a new one, and I'm having some trouble with it. It's a Dell Inspiron 8000. Most of the time when I close the screen and come back a while later, the laptop screen has shut itself off. That's fine. However, I can't seem to get it to resume. I move the mouse, click the mouse, type, but nothing seems to work. I finally discovered that if I keep opening and closing the laptop eventually the screen will come back to life. Also, sometimes I see when opening the laptop that the screen flashes on - and then flashes right off again.
What is the problem here? Is it some kind of faulty connection, and I just say "oh well" about? Or is it something fixable, like software problems?
Help would be greatly appreciated. Thanks.