Member Avatar for NSHARR

HI tried booting my system and got this messege VGA-no input signal. The monitor then went off. How do i resolve this issue

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Dani AI

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Good troubleshooting start by and — there are a few targeted checks that narrow whether the problem is the monitor, the cable/connector, or the PC (video card/PSU/motherboard). The steps below avoid repeating basic suggestions and focus on quick, diagnostic tests and clear failure signs.

  1. Distinguish “no power” vs “no sync”: note the monitor LED and try opening the monitor OSD menu. No LED and no OSD = power fault. LED on but “No input” message = PC or cable not sending a sync.
  2. Swap or isolate the display: connect the suspect monitor to a known-good laptop/PC, or connect a known-good monitor/TV to the PC. That single swap tells you which device to concentrate on.
  3. Inspect the VGA end-to-end: look for bent/missing pins, loose thumbscrews, damaged shell or exposed wire, and test with a different VGA cable (shielding failure can give intermittent “no signal”).
  4. Observe the PC at boot: fans and drives spinning plus a POST beep pattern indicate the motherboard started. No fans or no drive spin points toward PSU failure. If the discrete card has an auxiliary 6/8-pin power plug, confirm it is connected and the card fan spins.
  5. Look for hardware signs: bulging or leaking electrolytic capacitors on the monitor or GPU, or a faint image visible with a flashlight (backlight/inverter failure) — these are common on older LCDs and separate from a true VGA sync issue.
  6. Use onboard video if available: plugging the monitor into the motherboard video port (after powering down) isolates a failed add-in card from a motherboard/PSU problem.

Safety note: disconnect mains before opening the case or the monitor. If the swaps above point to a dead GPU, PSU, or a monitor with failed capacitors/backlight, replacement or a shop repair is usually the next step.

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Member Avatar for Bob_180_Bob

How long is a piece of string?????
First check your video cable from your PC to the monitor. If that is OK, and you have video card (A card plugged into your mother board that the monitor plugs into) remove it, clean the contacts with a soft pencil eraser and replace.
If still not working, take out your RAM and clean it /them and replace.
If that won’t work, unplug your hard drive, CD/DVD drive, 3 1/2 floppy, keyboard and everything else other than your mouse and monitor and see if monitor gets a signal then.

Member Avatar for sittas87

HI there

Make sure of the following
1- Signal cable is plugged in (firm)
2- Video card is plugged in. If you need to, remove the video card(Graphics Card) and put back in properly.

If that doesnt work than its probably a RAM prob. But try the above first

[Sorry for similar post, previous poster posted more or less the same time as me, but Ill leave my post anyways]
cheers
Sittas

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