I have an Acer AST180-Ua350b computer that is using an older CRT? monitor, the monitor keeps going black for me, I can enter data during the black outs and it will take the input. Does someone have an opinion if the problem is either the card or the monitor? It has been happening for a while and I borrowed some cards from my brother but never got around to trying them. It stopped happening so I gave them back to him and it is happening again. I suppose I will have to do some self tests to narrow it, but I just had surgery and am not able to move up and down the steps too much, and this one is in my basement, so any suggestions will take me time to get back here.