Black Screen ?

[Washac]

In the last couple of weeks my Mac pro flips to a black screen and back again every now and then, possibly once twice a day.

Any ideas any one.

It happened just then again.

 

[Tesselator]

Loose or faulty VGA cable?

 

[Macsonic]

Could be the videocard about to go south. You can try removing the videocard and place it back in.