Member Avatar for aztec101666

I have a HP Omni xe3 notebook.

Laptop will not turn on at all, purchased new ac adapter and still nothing. Can some one help or refer me in the right direction?

Before this happened, I used the laptop about 2 or 3 nights before hand and it was working fine. I shut down the laptop and came back about 2 or 3 days later and nothing, no lights, nothing, will not turn on, I've already removed battery and tried to power it up with out it, but nothing.

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Thread context: HP Omni xe3 shows complete no-power after being used days earlier; a new AC adapter was tried and the battery removed. suggested an internal PSU/motherboard fault and noted the battery test (already done). With no LEDs or activity, the next steps are focused diagnostics that don’t repeat what’s already been attempted.

Suggested diagnostic sequence (safe, ordered):

  1. Verify the AC adapter with a multimeter: confirm the adapter’s DC output voltage at the center pin while unplugged from the laptop. A correct, steady voltage rules the adapter out.
  2. Inspect the DC jack externally: look for looseness, bent pins, burn marks or wobble; a mechanically failed jack or broken solder joint is common and can cut all power even with a good adapter.
  3. Check for faint signs of life when the adapter is connected (charger LED, fan twitch, beep codes). Absence of any sign with a known-good adapter points toward an input fuse, power MOSFETs, or the power-rail circuitry.
  4. If comfortable and experienced with electronics, open the case (disconnect battery and adapter first) and visually inspect the area around the DC jack for blown components, bulging capacitors, or a tiny input fuse (often labeled F1 or similar). Use a multimeter to check continuity from the DC jack positive to the board’s first fuse/resistor.
  5. Try minimal-boot checks only if safe to do: single RAM stick, HDD removed, CMOS battery left alone. Do not repeat the battery-vs-adapter test already done.

Repair notes and cautions: daughterboard/DC-jack replacements or resoldering a jack are usually much cheaper than full motherboard replacement, but board-level power-IC failures can require costly repairs. Observe ESD precautions and avoid probing live circuits unless skilled. If the unit is under warranty or not comfortable with board-level checks, professional service is the prudent route.

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Member Avatar for Nick Evan

How old is it? I suspect the PSU (onboard) has died on you, the only solution is to replace the entire thing which is quite expensive. So your best shot would be warranty..

Edited by Nick Evan because: n/a
Member Avatar for joshua.tilson

Before trying anything drastic, Try taking the battery out and turning it on with only the power adapter.

I have see a similar situation with a couple of Dell computers, remove the battery(s) plug the Laptop into the wall and try to turn it on.

May not work, but if it does it will save you the cost of the new PSU.

good luck!

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