Member Avatar for zenqi

I was on the internet last night and suddenly, without warning, the computer went off. It may be my imagination, but I thought that I heard a click, perhaps a very quiet pop. It may have just been me clicking the keyboard. My computer is completely dead: no lights, no noise. The power cord works with my wife's Inspiron. Any suggestions?

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A sudden, silent shutoff with no lights almost always points at loss of power to the DC input. was right to check the supply, and ’s follow-up shows how often the cheapest fix (the cable/cord or adapter) is the correct one. The steps below give a short, ordered way to confirm the cause and avoid unnecessary parts swaps.

Quick checks:

  • Try a different known-good wall outlet and a different Dell-compatible adapter if available. Many adapters have a small LED; if that LED stays off the adapter or the LED comes on only when the cord is positioned a certain way, the cord or brick is suspect.
  • Remove the battery and try powering with AC only, then try battery-only. This isolates adapter vs battery.
  • Do a hard reset: unplug AC, remove battery, hold the power button for 15-30 seconds, then plug AC back in (no battery) and try to power on.
  • Visually inspect the barrel plug and DC jack for fraying, corrosion, or looseness. Wiggle the connector gently while watching any adapter LED. Intermittent connection is a common failure point.
  • If comfortable with a multimeter, check continuity of the cord and the adapter DC output voltage before probing the laptop itself. Only perform these tests if familiar with the tools.

If none of those work, the problem moves to the laptop’s internal power circuitry (fuse, DC jack solder joint, or motherboard components). That requires board-level diagnosis or professional repair — avoid forcing repairs if the machine is under warranty. For safety, do not attempt internal fixes if unsure; lithium batteries and power circuits can be hazardous.

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Member Avatar for compdoc

first thing is to check the power supply you can use a volt/ohm meter or a power supply tester. I like the power supply testers myself.

Member Avatar for zenqi

I bought a new power supply cord and it solved the problem.

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