Member Avatar for markbarrientos

Anyone can help me why my system unit do have a power while my monitor do not have? I'll check the power cord and cables in it is ok... the problem is my monitor still have a message :"No power or cable disconnected"..

pls help...

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  • Latest Post Latest Post by Adfaw

Dani AI

Generated

Following original post and the early replies from and , here are focused, next-level diagnostics and safe actions to isolate whether the problem is the display path, the graphics hardware, or the system itself.

  1. Check system POST and responsiveness. Listen for motherboard beep codes, watch HDD/activity LEDs and fans, and observe keyboard-light changes (NumLock/CapsLock). If the machine does not POST, the problem may be CPU/memory/PSU/motherboard rather than the monitor.

  2. Try an alternate video path without swapping monitors. If the motherboard has integrated video, move the monitor cable to the motherboard port (or enable integrated GPU in BIOS if present). On laptops, use the display toggle key (Fn+the display key) to switch outputs. This isolates discrete-GPU vs. system video output.

  3. Inspect the discrete GPU installation. With power off and mains unplugged, ensure any PCIe 6/8-pin auxiliary power leads are seated. Reseat the card in its slot, check for obvious damage or bulging capacitors, and look for loose screws or contact with the case.

  4. Minimal-boot isolation. With power removed, reduce the system to bare essentials: single RAM stick in the correct slot, CPU and cooler, GPU (or onboard video), no drives or add-in cards. Boot to see if video returns. This narrows the fault to a component added or faulty.

  5. BIOS/CMOS and driver angle. Reset CMOS (battery removal or jumper) to clear mis-set primary display options. If an image appears later, booting Windows in Safe Mode (low resolution) helps determine whether a driver or wrong resolution caused the blank screen.

  6. Monitor OSD and power brick checks. Use the monitor on-screen menu to confirm input selection and perform a factory reset. For monitors with external power bricks, verify the brick LED behavior.

Safety note: always unplug mains and ground against static before touching internals. If uncertainty remains after these steps, documented motherboard beep codes or a short test with a known-good video card at a repair shop will provide conclusive proof.

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Member Avatar for Adfaw

I think you just have a connection problem. There probably isn't anythign really wrong with your computer. The plug between you Monitor and the powers source is probably broken. Try usuing a different monitor and if it works than you'll know. If it still doesn't work than I don't know what to tell you. Call the electric company maybe. Just kidding. Let me know if you've tried a different monitor or what you've tried so far.

Member Avatar for kd5eej

If your monitor is displaying the "no signal/connection" message then there is power to the monitor or else you wouldnt see that message, Check the cable going from the back of the monitor into the back of the PC, it may look something like this. Make sure it is connected. if it is you may have a dead video card.
[IMG][/IMG]

Member Avatar for Adfaw

I think he's got a point. If you can see the message it's definitely got power. So definitely check your graphics card. It could be dead just like he said. Nice observation. Still, if you want any help on this we're gonna kind of need to know what you've tried so far, or else we're just going to be taking stabs at the dark. Any more info you can give us on the subject?

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