Why my charger indictor light show but not turn on

Hi @aukisuper,

Did you try what was suggested in an answer to your previous question regrading the problem as you never answered whether it worked or not?

Power light ON but never turn On

Moderator. — jayeff

jayeff @jayeff Репутация: 453,2к 11 368 1,4к · Answer 1 · 2024-05-05T06:46:09-07:00

Hi @aukisuper

Try a full power refresh in case a corrupted BIOS is the cause of the problem.

a). Place the laptop battery in safe mode. With the computer turned off and charger connected, press the Windows key + Backspace key + Power button (all 3 together). After the computer powers off, disconnect the charger.

b). Open the laptop and remove the battery from the laptop.

c). Disconnect the RTC coin cell battery from the motherboard.

Here's the maintenance and service guide for the laptop. Go to p.36 and p.58 to view the procedure to remove the battery and the RTC coin cell battery, respectively.

d). Press and hold the power button operated for 15 seconds and then release it.

e). Reconnect the RTC coin cell battery, reinsert the battery, reassemble the laptop, reconnect the charger and check if the laptop turns on when you press the power button.

If it does turn on then there may be a message saying that the date and time are incorrect. This is normal as the BIOS has been reset back to its factory default state. Once the date and time have been corrected the message won't appear the next time the laptop is started. Also any user definable settings in BIOS that were changed by you to suit whatever operating requirements you wanted, will need to be changed back again as well.

oldturkey03 @oldturkey03 Репутация: 785к 1,1к 894 2,3к · Answer 2 · 2024-05-04T08:34:47-07:00

@aukisuper which LED lights up when you connect your AC adapter? does it blink in a pattern or does it blink continuous. Continuous blinking is usually a bad thing, since it is most common a motherboard issue. Not that it can't be repaired but it just is more complicated work since it will require a board-level repair.

For now, try a reset first:

1) Remove the battery and unplug the DC power adapter.
2) Press and hold the power button for more than fifteen seconds.
3) Plug in the DC power adapter (leave the battery out for now)
4) Press the power button

If that does not work you will have to start at the beginning for some troubleshooting.

First you want to check your power supply. Make sure it has the proper voltages. Check to make sure that connectors are not bend etc. Check the DC-in jack of your laptop. Make sure there is no corrosion, debris etc. that prevents it from working. Clean it of any debris etc, use a few puffs of air to clean it out. If none of this works, get an ammeter and see if your laptop draws any amperage from the charger. After that, you need to check and see if your motherboard even gets power. For that of course, you need to open it up. Post Some good pictures of what you see. That way we can see what you see. Use the Hp Probook 450 G7 Maintenance And Service Guideto work on it. Let us know what you find out.

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HP ProBook 450 G7

Why my charger indictor light show but not turn on

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