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‎07-04-2019 06:34 PM

HP Recommended
Product: HP ZBook 15 Mobile Workstation
Operating System: Microsoft Windows 7 (64-bit)

Zbook is about 3 years old, runs fine except this one problem.  I cannot say exactly when it began.  If I boot the machine on battery and then plug in the AC adapter, the keyboard and mouse become unresponsive.  Also, the battery icon does not show the AC adapter as being plugged in.  When the machine is locked up, If I then remove the AC adapter and put it back on battery, it resumes running normally.  I can start the machine on AC and leave the AC plugged in until I shut it down, and everything is normal.  Likewise, if I start on battery and do not plug in AC, it behaves normally.  BIOS version is L70 01.45 of 04/14/2019 (current).  I install HP updates indicated in their Security Bulletin Alerts, but do not use Support Assistant.  Would like to be able to transition from battery to AC without locking up.

1 REPLY 1

‎07-06-2019 06:50 AM - edited ‎07-06-2019 08:04 AM

HP Recommended

The ZBook was on 'HP Optimized' power plan while I was having the problem.  Switched to 'Power Saver' and that fixed the problem.  Is there an update to the HP Optimized plan that avoids this?  Otherwise, 'Solved'.

 

UPDATE : NOT SOLVED

 

The change of power plan did not in fact completely fix it - it still happens, but much less frequently.  It has something to do with power management I guess, but that's as far as I can take it.

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