Motherboard/Cpu problem

[tkall]

Hello guys! I have a problem with a setup that came to me by chance. When i connect the onboard vga there is a rolling image coming to the screen. Now i think the problem is from the cpu, its an i5 3470s i guess on an asrock h61. Can you help? 

[Oshino Shinobu]

First thing I'd try is another VGA cable. As it's an analogue signal, a dodgy cable can cause issues. If the issue remains, try another display. 

If you have a dedicated GPU, plug that in instead. 

 

If you can, test the CPU in another board to see if there's an issue with that board's VGA connector. If that issue continues in another board, it is most likely a fault with the CPU's iGPU.

[SaladFingers]

To add to Oshino's post above, there's the off chance that even if it's a CPU problem, it could still only be its iGPU part. So if it plays nice with a discreet GPU it could be salvaged.

[tkall]

I tested 2 cables and the same happened. I used an old gpu of mine which works and its a similar picture but all black background and vertical lines that cycle all the time

 

[Oshino Shinobu]

50 minutes ago, tkall said:

I tested 2 cables and the same happened. I used an old gpu of mine which works and its a similar picture but all black background and vertical lines that cycle all the time

 

It's most likely the monitor in that case. Try the system with another display and see how it is. 

 

If the monitor has a different input, try using that.

[tkall]

I think its the cpu because the monitor i tested is my daily monitor and works fine

 

[faziten]

Do you have any digital cable to plug those in? HDMI, display port, DVI? Test them out without any sort of analog to digit conversion in the middle. It won't give any error, either works flawless or doesn't work at all. 

That error looks like a cable problem, it could be a RAMDAC problem (I am not referring to your system memory). The easy way is to avoid analog where possible and keep digital all the way.