Member Avatar for welshsteve

Hi All, has anyone had a similar problem with a HP Pavilion dv4000 lappy.
Totally dead - using battery or mains power.

Thanks in advance

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Symptoms reported by (completely dead on battery or mains) and (media LEDs light but no boot) point to two broad causes: imperfect power delivery (adapter, jack, or power circuitry) or a board/firmware fault preventing POST. The troubleshooting below is ordered from least to most invasive and avoids repeating the reseat/tap steps already tried by others.

Start with the power rail and connector: confirm the AC adapter’s rated output on its label, and verify the adapter is actually producing that DC voltage with a multimeter or by swapping a known-good unit. Inspect the DC barrel for looseness or intermittent contact (wiggle the plug while watching any activity lights). A flaky barrel jack or broken solder joint often produces partial powering symptoms (LEDs on, no POST).

Next, look for POST/boot indicators without opening the board: listen for fan or HDD spin, watch for any LED blink or beep codes and count them, and try an external monitor to rule out display failure. Perform a power-reset procedure: remove battery and adapter, hold the power button 15-30 seconds to discharge residual charge, then try AC-only start. If comfortable opening the case, visually inspect for bulging/leaking capacitors, burn marks, or disconnected cables; CMOS battery removal for a few minutes can sometimes clear a corrupted setting.

If the adapter tests good, there are no POST signs after the reset, and visual inspection shows no obvious damage, the fault is likely board-level (power regulation, BIOS, or chipset). Repair options include DC jack replacement/resolder, board-level repair, or motherboard replacement — weigh repair cost against the laptop’s age. ESD precautions are advised when handling internals, and tapping or forceful actions (mentioned earlier) are discouraged as they can cause further damage.

Useful diagnostic details to include in any follow-up: which LEDs are lit, whether fans/HDD spin, exact adapter label output, any blink/beep patterns, and whether an external monitor shows anything. These facts narrow the likely root cause quickly.

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Member Avatar for sittas87

meaning your laptop doesnt work without the charger plugged in??

Member Avatar for cybergin

Hi All, has anyone had a similar problem with a HP Pavilion dv4000 lappy.
Totally dead - using battery or mains power.

Thanks in advance

Hay , I have the same problem with my Hp pavilion DV4000
It won’t start up and the only thing that goes on are the light on the media display light up. But it dose not boot up.
Any Ideas as to what it could the problem? Please let me know. Thanks

Member Avatar for sharkeyfaa

i have the same problem no results yet

Member Avatar for batteryfast

i have the same problem no results yet

When we first reviewed the a couple months ago, it easily won Editors' Choice honors in our multimedia category. Its upgrade, the Pavilion dv4000, joins it at the top of the heap, with its own Editors' Choice title.

Member Avatar for marfin

this is what i usually do:
1. open the memory cap and re-insert the memory, open the hardisk cap and re-insert the hardisk then try to restart the laptop but sometimes it wont work.
2. if step 1 wont work what i did is turn on the laptop using the remote power on.
3. if step 2 wont work turn on the laptop using the remote but this time only the dvd player.
4. Last resort if still wont work i will just give a light taps at the back of the laptop and try to turn the power button.
5. Sometimes i give up and will let my laptop rest for couple of days and gently put it on the table and turn it on. :)

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