Screen Flickering On Asus Notebook

I'm writing on this forum because i want to know if i'm the only one in this case or not. When i bought my asus a6ja notebook in sept. 2006, it was working quite well, even better than my desktop computer in fact. But few months after, somewhere around february-march 2007, the screen began to flicker very strongly. Here's a video of what happened :

At start, it was just flickering like this in the lower-left corner of the screen. The problem is that i absolutely need my notebook at school (without it, i just can stop going to school, i'm studying in it). So around the summer holidays, i returned it to asus. They decided to replace the whole screen, it cost them around 500. They bring it back to me on september, and after just 2 power up, the same problem started to appear. The same in very worse, the whole screen's now flickering and i'm back to school now. What i mean by "flickering" ? Several pixel-lines of the screen are switching from on to off, and/or moving from left to right, and/or changing colors. They do not flicker at the same speed nor at the same intensity, so the whole thing looks a bit like if the display was crypted. Here's what i learnt :

When i move the lid from closed-state to opened-state, the problem disappears but come back a few seconds or minutes later. It happens when there's bright colors displayed. If i switch my windows skin to a black one, the problem disappears. Heat could be in relation since the laptop is always overheated at 60 or 65c (fans are working). I tried to put it outside, when the temperature was like 5c, and the problem disappeared, but came back a few minutes later. The screen always start to flicker from the left side, then it grow form left to right until the whole screen seems crypted. Switching the screen on and off does nothing, brightening up and down does nothing, rebooting doe nothing too. I tried using the omega drivers for my graphics card, but this time, display was totally frozen and the colors seemed to be additive (i mean that, the longer the screen was frozen, the brighter the screen was becoming). If let things becoming worse without moving the lid at all, the flickering grows, and grows, and grows, until display becomes stable again but is totally shifted. Display starts at 2 cm from the left of the screen and 1 cm from the top. So, what should i do ? What is the problem ? Which component is failing ? What sould i do with asus since they seem to keep on changing screens althought it doesn't seem to be the cause.

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