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- HP Community
- Notebooks
- Notebook Boot and Lockup
- HP Probook 450 G4 wont power on even when Plugged in

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07-30-2018 03:28 PM
HELP!! One of my coworkers is reporting that his HP Probook 450 G4 is no longer powering on. Even while plugged in the power will not come on. The power button also feels like it is not engaging. (There is no clicking) What could it likely be? The battery or the Power button? I know how to replace the battery.. but not the power button.. computer is currently taken apart to remove battery.
07-30-2018 03:38 PM
If you plug in the adapter without the battery does it power on?
Removal/Replace videos are here:
http://h20574.www2.hp.com/results.htm?SID=5224999&MEID=C989BFC0-04C0-4AA5-849F-80E221323919
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07-30-2018 03:53 PM - edited 07-30-2018 03:55 PM
Maintenance and Service Manual shows power button replacement:
http://h10032.www1.hp.com/ctg/Manual/c05270979
Or-video here:
http://h20574.www2.hp.com/results.htm?SID=5224999&MEID=C989BFC0-04C0-4AA5-849F-80E221323919
**Click Accept as Solution on a Reply that solves your issue**
***Click the "YES" button if you think this response was helpful.***
05-21-2019 06:53 PM
Battry couldve drained due to hibernation. Plugin the power adapter, then press the power button for 20 seconds. White light will be visible for a second from the adapter port, release the power button. Now press the power button to turn it on.