[GSixZero]

Occasionally for the past few months the top half of my screen will go black for a fraction of a second and then come back again. Now it's happening more, a few times a day, and I'm trying to decide what to do. I use my computer all day for work so being sidelined would be bad news.

Anyways, it's the first Unibody MacBook pro, the one with the removable battery. 2.4Ghz Core 2 duo. Anyone know if this is a common issue in these models?

Thanks.

John

[ibook_steve]

Unfortunately, this sounds like a problem with the graphics chip. What happens when you are connected to an external monitor?

Might be time to head to the Apple store...

Steve

[adamfishercox]

This is an issue with the NvIDIA integrated graphics card. Is this a model with 2 cards? If so, switch cards and you'll see the problem is gone. I had this issue, sent it in, and they replaced the logic board/graphics card. Now it's back again. It's a widespread problem with that chip, so it's likely they'll end up replacing it with another one that will be defective in a matter of time.

[seanc]

Half of the screen? I would have said the cable, but I'd suspect adamfishercox is better informed than me.