I am experiencing a weird problem with my computer. When I turn on my computer, it interferes with my TV downstairs and it won't receive any signal on a handful of channels (ITV, ITV2 and a couple other channels)dunwe. This issue has only happened when I moved my computer into a new computer case, with a new PSU and computer fans.
This problem is most noticeable when I am playing any computer game (I can't view any of the selected channels at all), which leads me to believe it's related to perhaps the GPU fan causing interference. Whilst playing, I have tried unplugging all my inputs which makes no difference at all, the tv still won't receive any signal.
I am using a TV aerial which is kept in the Loft and the TV is kept downstairs. I have tried using different plugs, cables, power wires and even a new monitor cable. My internet connection is by ethernet and we have no WIFI in the house.
One last thing, I hear a very quiet high pitch sound coming from my PSU, I'm guessing this sound is normal, but I am not 100% sure.