Member Avatar for jim3472

Recently my monitor is cot starting. I have pluged out VGA cable from my pc. It is showing blue light on power light. But when i pluged it in on my PC and press the start button of my PC it become yellow again. I have checked my RAM. It's ok. I unpluged and pluged it, but nothing happened. Is their anybody to help me?

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  • Latest Post Latest Post by XP78USER

Dani AI

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A short, practical diagnosis based on what described and the replies from and : the fact the monitor shows a "powered" color with the VGA unplugged but changes when the PC is started points to either a lost video signal, an input/cable fault, or an internal monitor power/backlight problem. Work through these ordered checks to isolate the exact component.

  1. Verify the PC actually posts: fans spin, drive activity, motherboard LEDs, POST beeps, and keyboard lights respond after power-on. If the PC never posts, fix that first.
  2. Power-cycle the monitor: turn it off, unplug mains for 60 seconds, hold the monitor power button 10 seconds, then plug back in. This can reset the monitor board.
  3. Press the monitor Menu/OSD button with the video cable connected and the PC on. If the OSD appears while the screen content is blank, monitor electronics are working and the problem is the video signal path. If the OSD does NOT appear, the monitor’s internal power/backlight or mainboard is likely the culprit.
  4. Inspect the VGA connector pins and the cable ends for bent pins, loose shielding, or corrosion. Swap the cable or use another input type (DVI/HDMI/DP) or a different display only if you can do so without repeating steps already tried.
  5. If the OSD works but you still get no image: check BIOS/UEFI display during boot. If BIOS is visible but Windows is not, it may be a driver or OS issue. If BIOS is not visible, test the PC with a different display or try the motherboard video output (or reseat the graphics card and its power cables).

If the screen is faintly visible in bright light, that points to a failing backlight/inverter. Do not open the monitor unless qualified. Report the outcomes of the OSD test, whether BIOS appeared, any POST/beep behavior, and the monitor and GPU models for more targeted advice.

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Member Avatar for Ritesh_4

Hi
Have you tried to attach the monitor to a laptop's VGA port and see if you get any image there?

If not, then either the cable or the monitor itself is the problem's source, else there is a problem with your graphics card on the pc.

Member Avatar for XP78USER

Try a new VGA cable maybe the cords faulty.

Edited by XP78USER
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