Member Avatar for pittapat

Hi everyone,
I'm probally not computer savy enough or know a lot about the workings of computers to be on this website, but I cannot find anything online that seems to be able to help me, We have Windows 7 and have been using 2 monitors for quite a while. I bought a new monitor today to suit our computer with the HDMI cable and set it up in the middle of the other 2. It is working fine and the monitor with the blue adaptor is also working fine. But the monitor with the white adaptor has a floating sign across it saying to 'check signal cable' I have pull the cable off and re fitted it, turn the monitor off and restarted it, but nothing has still happened. I am hoping that someone out there can give me some ideas on how to fix this in terms that I can understand.

Kind Regards

Pittapat

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  • Latest Post Latest Post by Xlphos

Dani AI

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Short, practical checklist to narrow this down (expanded from hint and tailored for ):

Start by isolating the fault. Swap the cable and the non-working monitor onto a port you know works. If it works there, the problem is the original port or adapter. If it still shows no signal, swap the cable or try the monitor on a different PC to rule out a bad lead or failed monitor.

Check the adapter/port type. Passive DVI-to-VGA adapters only carry analog signals and require a DVI‑I (or DVI‑A) socket on the graphics card. A DVI‑D port has no analog pins and will show “no signal” with a passive VGA adapter. Visually inspect the DVI plug: DVI‑I has four small pins around the flat blade; DVI‑D does not. If you find a DVI‑D-to-VGA situation you need an active converter or a digital connection (DVI/HDMI/DisplayPort) on the monitor.

Confirm how many displays the graphics adapter actually supports. Open Device Manager or run dxdiag and note the graphics adapter model, then check the GPU control panel (NVIDIA/AMD/Intel) for “detect” and “multiple displays.” Update drivers before major changes. If a discrete card is installed, motherboard video outputs are often disabled — enabling both may require a BIOS change or is simply not supported.

If the card cannot drive three outputs, options are: replace with a card that supports three simultaneous displays (or DisplayPort MST), use an active converter for digital->analog, or add a USB video adapter (DisplayLink) as a last resort. Post the exact graphics adapter name and the physical ports in use if further confirmation is needed.

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Member Avatar for Xlphos

Hello,

Can you post you computer specs?
your graphics card may not support another monitor.

Member Avatar for pittapat

Hi........thanks...........
HP p6340a
INtel Core(TM)2 Duo CPU E7500 @ 2.93GHz 2.94GHz
Memory 4.00GB
64-bit
Regards
Pat

Member Avatar for Xlphos

Do you have more detail on the graphics card you are using?

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