Hp compaq 8510p not charging

SOURCE: Charger plugged in and computer says it's charging...but it's not

Return it! It's a factory defect they just admitted to it online. Call HP and they'll fill you in on the details.

SOURCE: My hp compaq laptop nx6325 refused to charge its battery

If the battery charged in another system, but not in yours, then most likely you are looking at a motherboard replacement.

Average cost for motherboard is around $200, if you have it installed by a technician, another $100 or so.

SOURCE: hp compaq nx7400 - battery died and power cord will not turn comp

If your system won't boot up with just the AC adapter connected, it means to say that there's a problem with the AC adapter or the motherboard of the computer. Basically, if the AC adapter or the motherboard is damaged, you won't get a charged battery. If there's another AC adapter that you can try your computer with then that will be great. If antoher AC adapter works, then you just have the AC adapter replaced. If a known AC adapter didn't work then you may need to consider replacing the motherboard of the computer.

SOURCE: Hp compaq nc6320 doesnt charge

I have had a similar problem and solved by another solution. I think you should try it before grabbing a soldering iron.

In my case my charger was not working from one day to another. So I bought a universal charger of Kingston. Worked without any problem for a long time ~6 months. Then same problem again. Checked voltage of the charger and that was okay. Strange thing with a charger of a friend, my laptop charged again! So I thought I needed to buy another one.

Still it was strange that two chargers broke in such short time and at the same time still have voltage around 19V and charging other laptops! So I checked a forum and there I found the follwoing solution (uninstall the AC adapter and reinstall it again in the device manager):

- go to control panel
- system
- device manager
- batteries
- uninstall the programm for the AC adapter
- go back to control panel
- check for new hardware and install the AC adapter software again

Problem solved! Even my old adapter works again!

SOURCE: my hp compaq laptop charger is not working in the

First of all, you need to make sure your power adapter is providing enough power to both run the laptop & charge the battery. A very good way to do this is to compare your laptop voltage & ampere requirements (written on a sticker on the bottom of the laptop) with the voltage & ampere ratings of the power adapter. Voltages should be the same, or the power adapter's voltage about up to 0.5 volts more than the laptop's voltage rating. Amperage of the power adapter should be at least equal to or greater than the laptop's rating. It should never be less than the laptop's rating, or else the power adapter will be providing insufficient amperes to charge the battery. Of course, the power adapter's nominal amperage might be ok, but it degraded on usage. You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.

DC Jack diagnosis:
1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.