Since it is happening with more than one device, your laptop and the other
pc, it is probably something in your hookup. Laptop power supply is not the
problem!! Cue is that when you use the laptop in battery only mode the
symptom goes away. Some type of ground loop possible via the mains feed?? I
bet it even happens if the same outlet that the tele is connected to is
used.
"Roffe" wrote in message
news:qNoLc.2699$vH5.812@amstwist00...
Hi

Please check your power-supply for the laptop. (electrolytic capacitors.)
regards
RBJ

"Carter Burke" skrev i melding
...

Hi everyone,

I have a problem that has me a bit worried-

I have a laptop connected to a TV and am using the TV as a second
monitor and several days ago I noticed some audio humming and a slight
scrolling dark patch in the video.

I wiggled the outlet the laptop is plugged into and it cleared up a
bit but did not go away completely so I replaced the outlet. I plugged
the laptop into another outlet in the room and the inteference is
still there.

If I unplug the laptop and run it from battery power everything is
fine.

I connected another PC to the TV and it shows the same symptoms.

I am now concerned that there is something wrong with the electrical
system in the house and this is a warning sign.

I'm not looking for a definitive answer (although one would be great),
just some pointers as to what might be the problem so anyone with any
ideas please let me know.

Thanks!