Quote: Originally Posted by karelo
First of all sorry if it's not that Windows related!
So the problem is that my LCD TV has a scrambled picture when my computer is turned on and connected to the TV via HDMI. I got analog signal TV connection but the picture is fine while the PC is turned off. Yeah I know I should get digi TV but till then I would like to sort this out. The TV is a Samsung 40" LCD model LE40A336. It has 2 HDMI input ports. Tryed both with same results. BTW if I remember it right, I had the PC connected via VGA last weekend and didn't have this problem. I will double check it in the morning.
Maybe I'm using wrong setting with PC... wrong Hz or sth. Anyhow maybe someone has had similar problems and solved it.
GTX 470 DVI->HDMI
Windows 7 x64
EDIT: The TV is the only monitor connected to the PC via HDMI. Sound is passing through the HDMI cable aswell.
the VGA doesn't transfer data signals through digital technology, it uses analog, that's why the picture appears correct on the VGA, the HDMi though uses a technology called HDCP handshaking, the PC needs to handshake the display for it to show the images being encrypted from the desktop, if that handshake doesn't take place then the image will appear scrambled.
you can read up about HDCP here High-bandwidth Digital Content Protection - Wikipedia, the free encyclopedia
but your options are just to use the VGA cable, or if it is a software fault then you could try and update your graphics driver
as NV may have added support for your display