I have an ATI Radeon HD 5700 graphics adapter which I am trying to connect to a TV and a monitor.
With only the monitor connected everything works fine, however as soon as I plug in the HDMI cable going to the TV the screen begin to flicker.
I have updated the system bios and the graphics driver and the problem remain.
The screen flickers during POST and in boot up menus when the cable is connected so the issue doesn't seem related to the os (win xp) or my drivers.
The flicker may remain even after detaching the hdmi cable and require me to disconnect the computer from the mains to get it working normally again.
When connecting my laptop using the same cable to the tv in question, the laptops display does not flicker. So the tv and the cable should also be ok.
Can anyone shed some light on this issue, is it a broken gfx adapter or can it be something else?