Video card or monitor problem?

[gamerno]

hi all

I have a problem when i play games,i get this one line all the time i mean its not a big deal but im geting piss off,when i get the line its almost as if the monitor is loses power or the game its about to turn off or somthing.I mean i can still play b/c the line is not always there but after my hd 5750 did the same thing and after it die i got a gtx 560 ti hawk and a cm haf 912 thinking that the hd 5750 die b/c it got no air but then i dont know. and just to let ya know this a 2 year old pc and i got form HP

 

[DelroyMonjo]

We need more information on the rest of your system, gamerno. Power supply, processor, memory.
You have to look at the label on your power supply to tell us what it is.

 

[gamerno]

cpu-AMD Athlon II X4 635 Propus 2.9GHz
memory-6GB ddr3
750GB hard drive
wins 7 64-bit
gtx 560 ti hawk
mobo-H-RS880-uATX
Thermaltake TR2 W0388RU 600W ATX 12V v2.2...but it only puts out 576w
20" hd lcd montitor 1600x900