Pavilion DV7-3162nr: HP Pavilion DV7-3162nr does not turn on and the battery light flashes during charging

I was upgrading my HP DV7-3162nr for windows 10 when all of a sudden the laptop stopped working and would not turn.

The power adapter is plugged in and battery led was flashing. Now battery led does not at all depend on. When I press the Start button the laptop would try to start then turn off after about one second. However most of the time when when I press the button nothing happens.

I took out the battery and tried to immediately start the alternating current, but the laptop is like there is no power. The led near the power connector is on the AC adapter is plugged in. I checked the tension between the adapter and it is correct to about 19 volts, I even loaded to 1.5 Amps and voltage remained close to 19 volts. I tried now on the button for more than one minute with applied power (no battery or AC) and no change when I tried to start with just AC.  The battery is old, but shouldn't the laptop run on just the AC adapter with the battery installed? I do not think that windows 10 has done this, but it's a weird coincidense that he died during the upgrade.

I read about simular problems with flags of HP but nothing exactly like it.  The fact that I can not turn on the laptop with just the adapter seems to be a problem really bad.

Anyone has any ideas I can try to let me know

I was able to fix my laptop.

I thought that it must be a hardware problem, because the laptop would not run just the adapter. And the adapter was good, as I said, he had the right voltage and can support the load.  So after looking at a lot of U tube videos on how to disassemble laptops and looking for schematics on the laptop which I couldn't find. I disassembled the laptop and a beep on the load circuit and it showing. What I found, it was a bad MosFet at the beginning of the charging circuit. The MosFet P/N P0603BDG has shorted door to the Source.  I was able to get the part of China via Ebay for less than $5.00 total and it took a week to arrive.

Now, the laptop charging the new battery and works very well. I could have found the bad MosFet faster if I had diagrams. Does anyone know if it is possible to get the schematics for this HP laptop? I found a manual and it helped a bit to disassemble the laptop, but he had nothing on the main map.

This problem is now solved hope it helps someone out there.

Tags: Notebooks

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