Member Avatar for teresaB

Press my little start up button, which lights up for 3 secs then goes out, no other noises coming from laptop, dead as a dodo, doing exactly the same with power lead in. HELP !!! PLEASE SOMEONE !!! PC World £80 just to look at it, Toshiba knowledge base no help, desperate !!

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  • Latest Post Latest Post by caperjack

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A concise troubleshooting checklist to narrow the cause for an Equium M50 that shows no sustained power—building on the earlier suggestions from and the original report from .

  • Verify the AC adapter first. Read the voltage/current on the adapter label, then measure the adapter output with a multimeter (DC volts). Probe the inner barrel with the positive lead and the outer sleeve with the negative lead. The measured voltage should be close to the label (within about 5-10%). If the adapter has an LED, note whether it lights.
  • Perform a power-reset: remove the battery and AC, press and hold the power button for 20-30 seconds, then plug in AC only and try to power up. Inspect the DC jack at the laptop for wobble, burn marks, or loose pins while doing this.
  • Eliminate removable items: remove/reseat memory modules (test one stick at a time), remove HDD/optical drive and any USB devices, then try powering. Faulty or poorly seated RAM can prevent any lights or POST activity.
  • Interpret results: a dead or out-of-spec adapter points to replacing the adapter. If the adapter reads correct but the laptop still refuses to stay on, the DC-in jack, a blown input fuse, or a short/regulator on the motherboard is likely. A momentary light then shutdown commonly means the supply drops under load or a protection circuit is tripping.

Safety and next steps: always unplug AC and remove the battery before opening the case. If not comfortable with board-level diagnosis (checking fuses, jack solder joints or regulators), seek a repair shop that can measure rails and inspect the DC jack—board repair is often cheaper than a full motherboard replacement.

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Member Avatar for caperjack

doing exactly the same with power lead in. !!

do you try power in with battery out .

Member Avatar for teresaB

do you try power in with battery out .

Thank you for replying, if I take the battery out but leave the power lead in, the start up button doesn't even light up !!

Member Avatar for caperjack

Thank you for replying, if I take the battery out but leave the power lead in, the start up button doesn't even light up !!

from that im thinking that the battery then is almost dead ,just enough to turn on lights for a second ,and the power adapter isn't working at all .! because it should at least turn the lights on also,but i could be wrong

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