Horizontal lines scaning my monitor display, please help

Hi. I have horizontal lines that scan my monitor whenever i play a game. I can see the horizontal lines only on darker colors like grey, dark-green etc. I have a Samsung E2220 display that runs at 1080p on 60hz on a vga cable (no hdmi/dvi support on it). I tried another vga cable, i tried another power cable but with the same result.
I have all drivers updated (monitor and other hardware). My current PC specs are: AsRock N68-C S UCC, Phenom II x4, 4Gb DDR3, Radeon HD7770, 500gb HDD Sata3 and a power supply Sirtec 500W 80+.
If I open Far Cry 3, for example, i get those horizontal lines. If i minimize the game i still get the horizontal lines if i have something dark on my display (a grey/dark-green/dark-blue website).

Before the HD7770 i had a GTS 450 and had the same problems. Could it be the PSU, or the motherboard or what? I also tried a different display monitor (on the VGA) and had the same horizontal lines scaning my display monitor.
The monitor is a year old, still under guarantee same goes for the PSU and the other components.

What do you think ?


PS: Lowering the resolution or increasing/decreasing the Hz doesen't help.

Sorry for my bad English.

That monitor has a DVI-D connection. And the 7770 certainly does.
Why aren't you using the DVI cable?
That may be all it is.

Samsung E2220 -- is a phone!

Now it is (on Google)! It used to be a Synchmaster. There outta be a law!

Mine doesen't have a DVI-D.. it's the "Poor Edition". I only have VGA. It should have had a dvi, but it doesn't

Does your vga cable have big round things (commonly called noise filters) near both ends, such as in the picture below? If not you should get a cable has them and, preferably, is thick. Also, you can buy these noise filters and some say that putting one on the power cable of a tv or monitor can improve picture quality. My brother claims that using on fixed the static he was having his LCD tv, for whatever that is worth.

Yes, i have two ferrite cores on my both ends of the cable. I even tried a quality old white cable thick as my finger with two big ferrite cores on both sides, but to no avail.

I spent 20 minutes trying to remember that they were called ferrite cores, and couldn't, even with searching online.

I've been searching on Google for "Samsung horizontal lines" and I have found many reports of Samsung TVs and monitors starting to have these lines after a couple years or more with no solution found. Some say it is a sign that the screen is starting to fail.

I'm currently not sure of any other explanations. I will continue searching and get back to you if I find anything new.

Here are a couple of suggestions from other members:

"He has a poor power supply. Their isn't much info on it except that it only has two 12v rails at 20 amps. It could be ripple feed from power supply under load."

"With TV's, scrolling horizontal lines are called "hum bars" they are 60 cycle hum bars (AC power is 60 cycles here anyway). Usually rolling from the bottom, with one popping up just before the other rolls off the top. This is usually a ground problem with the cable, but can also be AC ripple issues. Barring an internal ground issue, or a bad GPU, it may be his AC power. A good surge protector with isolation would help, or likely a UPS, if this is indeed the case."

And thinking about these good ideas I thought about electromagnetic interference. If the monitor is too close to anything with large magnets or an AC-DC transformer it could affect the signal too.

You might want to investigate these possibilities.

You have eliminated the VGA cable and monitor since you've tried different ones. I would also suspect the low quality PSU, one with a single 12V rail will deliver about 38A as opposed to 20A.

Thank you for your answers. My PSU is a german Sirtec 500W 80+ with >75% efficiency and 21A on each 12v1 and 12v2. The PSU is SLI/Crossfire Ready and it's a year old.

I've tried a different monitor display Samsung SyncMaster 244T that has both DVI and VGA. On the VGA i had the same horizontal lines vibrating but on the DVI no lines, everything was nice. I don't understand. I tried different VGA cables and same thing happend. All my power outlets are grounded.

In your graphics card's control panel, play with the settings to test. Try a different refresh rate (if available), screen resolution (a default one), color depth. See if that changes anything.

You could also check the monitor settings, the refresh rates should match on both ends.

solution

try a higher level psu

i.e. corsair 500