My PC has TV out but that doesn't mean any thing any way (mines Scart)
What graphics card?
What type of TV do you wish to connect to?
Most flat screen TV have PC input which is VGA socket (Dsub 15pin blue)it will take a monitor cable but to get sound you need to connect a 3.5 jack to speaker out a (PC and audio in TV)
Your graphics card if newish may also have Hmdi