Disconnect the charger and then ''press and hold'' the laptop’s Power On/Off button for a ''full 15 seconds'' and then release it.
Reconnect the charger and try to turn the laptop on.
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=== Update (08/24/2021) ===
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@Zaki Mixer
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OK
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Try to reset the BIOS by disconnecting the charger and then removing the battery and then holding the Power ON button for 15 seconds and then releasing it.
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Then reconnect the battery, reassemble the laptop, connect the charger and try turning it on.
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Here's the [link|http://h10032.www1.hp.com/ctg/Manual/c04919621.pdf|maintenance and service guide] for the laptop. Go to p.38 to view the necessary pre-requisite steps and then the procedure to remove the battery.
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If the laptop starts OK allow it to boot all the way to the Windows desktop and then after a little while check if the battery is charging OK.
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If it is allow it to fully charge before disconnecting the charger.
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Also create a [link|https://www.windowscentral.com/generate-battery-report-windows-10|battery report] to check the status of the battery. Compare the ''Design Capacity'' value versus the ''Full Charge Capacity'' value. With a good battery the values should be close to being the same. If the Full Charge value is <40% of the Design Capacity it may be time for a replacement battery.
Hi,
Try to reset the PC.
Disconnect the charger and then ''press and hold'' the laptop’s Power On/Off button for a ''full 15 seconds.''
Reconnect the charger and try to turn the laptop on.