Hdmi not working on computer

[lizzylegz]

Hello,
I have a amsung lcd tv nd i'm trying to connect it to to my Advent pc,i have tried using a HDMI cable bt my tv can't detect the devce so i tried using a Vga cable same problem ... someone please help befor i throw my pc screen at the tv

 

[Aristotelian]

What is the model of the computer? What operating system? Have you tried it with a computer monitor? What is happening when you turn the TV on? Do you get scrambled lines or any kind of signal.

If it is a laptop/netbook you may need to mess with the display settings.