When i power it on all the lights/indicators come on, as in the touch button controls above main keyboard, and they stay on for a bit then go off then come back on, i believe it is the motherboard but that i would check here to get your thoughts on this

Dani AI

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Summary and focused diagnostic checklist to complement the suggestions from , , and others. The replies point toward either a board/graphics issue or a power/input problem; the steps below show how to isolate which subsystem is failing before buying parts or paying for a repair.

  • Power sanity

    • Verify the AC adapter either with a multimeter or a known-good, matching-spec adapter. Test with the battery removed (AC-only). Inspect the DC jack and cable for looseness, fraying or intermittent contact.
  • Minimal-boot isolation

    • Remove HDD, optical drive and all USB devices. Leave a single memory module in the primary slot and try power-on. Note fan activity, any POST beeps, and whether keyboard LEDs (Caps/Num Lock) toggle. Beep codes or LED behavior often locate the fault to POST-able hardware versus an early power-rail failure.
  • External-video test

    • Attach an external monitor to the VGA/HDMI port. If external output appears while the internal screen stays blank, suspect the panel/inverter/cable. If both displays are blank, focus on the system board/graphics path.
  • Visual inspection and thermal maintenance

    • Open the service panel to check for bulging capacitors, scorched areas, loose connectors, or clogged heatsink/fan. Cleaning dust and reseating the heatsink (with fresh thermal compound) can cure some thermal-related failures. Professional board-level repair is required for cracked GPU solder joints.
  • Data and warranty precautions

    • Remove the hard drive to preserve data (use a USB adapter/enclosure). Check any warranty or service programs before opening the case. Use ESD precautions when handling components.

If diagnostics point to the graphics/chipset area, note that home “reflow” attempts can give temporary fixes; long-term reliability usually requires professional rework or a motherboard replacement. The checklist above helps decide whether a simple parts swap, data rescue, or a board-level repair is the appropriate next step.

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I've come across this website which could help you. Its help

Sounds Like the GPU overheated and de-soldered itself from the motherboard.. There are a lot of these out there. Check h.p.'s website to see if it's been re-called.

Had exactly the same problem it is the motherboard and it is a known fault with them cos i had the DV pavilion 9800, Luckally mine is under warenty So i sent mine back , althought HP tech support is shit so i contacted the vender i bought it off

I think your laptop power supply was fail.

I think your laptop power supply was fail.

Its not if you look at all the forums and problems people have had it is a known fault and has had a recall by HP

On a separate note I am so sick of HP DV's 3 problems in 3 years !

had the same problem with mine most likely the video chip if the power supplys good do all the lights come on before turning off if so its the chip i repaired mine for less than five dollars.

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