[GreenKeys] qrm

[Mike E]

I have a question and as a ham I am ashamed I don't have the answer for myself.
I am trying to use my multiband radio to copy RTTY using MMTTY to the computer.
The problem is that the computer is putting out so much RFI that I cannot hear anything on the radio. I know toroids will take care of the problems through the cables but what about RFI from the computer itself? 
It does not matter where the radio is, I get nailed by off the scale RF.
Any thoughts gang?
73
Mike KA2SPH