[Elecraft] Interference from Computers

[tom.w3qs]

Good Morning Group,

I am back on the air (4991) after nearly 20 years.  The first thing I
noticed was all the interference on 20 meters.  Hetrodynes everywhere!
What's going on?

Took me a while to figure out that it was the computer - not there 20 years
ago!

So, other than removing it from the shack (ghastly thought) is there any
font of wisdom on this subject or general guidance?

Thanks and 73,

Tom, W3QS