I'm having a very strange hardware issue with my Mecer m770u laptop with intel i7 quad core, etc... I'm wondering if anyone has had this issue with any other brand/model of laptop, and what I should fix/replace to solve it...?

Basically when I close the screen of the laptop, the screen often goes completely white. If I open it slowly and smoothly again, the screen returns to normal. But if I close the screen when the computer is off, and then switch it on, it boots with a white screen, and opening it slowly/smoothly doesn't help. I have to then switch it on and off a few times before it returns to normal. Makes travelling with my laptop really difficult! Any suggestions?