Page 1 of Monitor problems when online!!

I have had a Dell PC now for nearly 3 years. Just recently when I am online, my monitor decides to switch off completely and will not go back on until I reboot. I use AVG and have virus checked and it says I am clear.

Does anyone know why this is happening to me?

If you need more specs on my PC let me know.

Thanks

Simon

Do you have the monitor`s power plugged into the computer or plugged directly into the power socket? If it is plugged into the computer, it might be wise to plug the monitor in separately as it looks like you computer might be overloaded.

Another problem(if its not that its probably this) is possibly the graphics card itself. Do post your specs and then we actaully have an idea of what could be wrong.