Member Avatar for firoz.raj

When i tried to Switch on monitor .i got error
(1)No input Signal
(2) Monitor Going to sleep .Kindly let me know the idea.
Any help would be highly appreciated.

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Useful, compact troubleshooting steps to narrow whether the problem is the monitor, the cable, or the PC video output. This builds on 's suggestion to check connectors and reseat the video card and gives a few extra checks and what each result means for .

  • Try a known-good cable and, if possible, a second monitor or laptop. Swapping isolates the bad item quickly.
  • Use the monitor OSD to confirm the active input (VGA/DVI/HDMI). Some monitors do not auto-switch reliably.
  • Inspect both cable ends for bent/missing pins, damaged wires or loose shell; gently tighten the connector screws on analogue links.
  • Power off, unplug mains, ground yourself, then firmly reseat the graphics card and any PCIe power leads. If the system has integrated video, move the monitor cable to the motherboard port to test the onboard output.
  • Boot: if the BIOS/POST screen appears, the hardware is OK and it is likely a driver/resolution issue in the OS (use low-resolution/safe mode to fix). If nothing appears even for BIOS, suspect hardware (GPU/cable/monitor).
  • With the monitor powered on, shine a bright flashlight at an angle onto the screen—if a very faint desktop appears, the backlight/inverter has failed.

Safety note: always unplug before opening the case. If swapping parts and tests still fail, the monitor or GPU likely needs repair or replacement.

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Member Avatar for Rik_

Is it plugged into your PC properly?

Member Avatar for firoz.raj

Is it plugged into your PC properly?

Power as well as data cable is plugged properly into the monitor
and Cpu.
when computer start.one dialog box come.
and saying VGA Input No input
Resolution required: 1280x1024 60hz.

Member Avatar for Rik_

Next, check that there are no bent pins in the monitor cable. If not, you will need to open your pc up and remover and refit the graphics card (if it has one).

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