Member Avatar for bruha8

This should be pretty simple, but I'm hardware illiterate!

I moved our OLD Dell GX1 and went to turn it on, and now the light on the main switch comes on, but it won't fire up the monitor.

I pulled the cover and found that the long, black/red wire from the switch under the cover (trip switch?) came loose and I need to know where it plugs into?

Given the long length, there appears to be a female receptacle at the back of the motherboard with four pins, which the wires will reach, but there's a male plug on the wire with only a two-wire connector.

Does it plug into the middle two pins in said female, or am I way off the mark?

All input will be appreciated!

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  • Latest Post Latest Post by Rik_

Dani AI

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Good work by for getting it sorted, and solid troubleshooting from . A few concise, practical notes that help on GX1 and other older desktops after a move.

  • Always unplug the machine and ground yourself before reaching inside.
  • Check the external monitor and cable on another PC first. A powered case light does not guarantee video output.
  • Follow each cable visually. Drive or power cables can shift and tug small front-panel plugs. Look for loose Molex/SATA power and the 20/24‑pin ATX and CPU power connectors.
  • Use a minimal-boot test: power, CPU, one RAM stick, onboard video (or single video card), and keyboard only. If that posts, add drives and cards back one at a time to find the offender.
  • Front-panel headers are usually silk‑screened on the PCB (PWR_SW, HDD_LED, RESET, CHASSIS). If a two‑pin wire is loose, match it to the labelled pins; chassis intrusion headers are optional for booting.
  • If still dead, listen for beep codes or look for motherboard LEDs, and consider swapping the PSU or testing it with a known-good unit.

Preventive tips: secure drive bays and cables with screws or zip ties to avoid strain, keep the case clean of dust, and reseat cards and RAM after any move. These steps save time and usually avoid needless parts replacement.

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Member Avatar for Rik_

That will be the case intrusion switch I suspect. It doesn't need to be connected and is not the cause of your problem.

You should remove and refit your ram and all pci and agp cards if any.

Member Avatar for bruha8

Thanks for the reply.

Turns out that the hard drive had shifted and pulled the plug just enough to screw things up.

Gave me a chance to vacuum out the years of crap that had developed inside the old beast.

Thanks again!

Member Avatar for Rik_

I'm glad it's working. :)

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