Re: HP ProBook 4540s battery problmes (265 Views)
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Occasional Advisor
Zeljko
Posts: 9
Registered: ‎12-01-2008
Message 1 of 5 (302 Views)

HP ProBook 4540s battery problmes

Hello all,

 

i have problems with HP ProBook 4540s; when i just insert battery charging LED above power connector flashes WHITE. When that happens i cannot turn on notebook.

 

But when i first connect DC adapter, and then battery it is possible to turn on notebook. BUT when i cut off power to it it shuts down - as dead. Like battery if not there or it not charged at all.

 

I tried with old and brand new battery its exactly same. On old battery on windows tray it says plugged in - not charging but its about 43%. On new one same but it says its 98% charged.

 

HP Battery check on old says its bad and it needs to be replaced with 175 of 300 cycles.

 

HP Battery check on NEW says its OK, and 1 of 300 cycles.

 

Remember, on both if i plug off DC adapter - notebook goes dead and battery/charge LED flashes WHITE, after that its impossible to turn it back on, unless i plug off both abattery and DC adapter, and plugg them in on order: DC->BATT->power ON.

 

Now,... to be even more intresting i changed motherboard also, HP smart adapter 90W too, with brand new - have SAME issue.

 

Its really annoying, so im asking did anyone else had same or simmilar problem to share resolution maybe?

 

unit, is in warranty for short time by POP only, so i hope i will find fix before its OOW.

 

Many thnx in advance :)

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Esteemed Contributor
Toffy
Posts: 648
Registered: ‎03-08-2013
Message 2 of 5 (285 Views)

Re: HP ProBook 4540s battery problmes

[ Edited ]

Zeliko

 

Please check the Battery and test it, calibrat it

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/troubleshootDisplay/?sp4ts.oid=5...

 

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4ts.oid=5229455&spf...

 

 

Battery tool

http://h20239.www2.hp.com/techcenter/battery/battery_ts.htm

 

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Occasional Advisor
Zeljko
Posts: 9
Registered: ‎12-01-2008
Message 3 of 5 (272 Views)

Re: HP ProBook 4540s battery problmes

Dear Toffy,

 

i did all of that as first solution.

 

You see that battery test says OK for new one with cycle count 1 of 300 (brand new).

 

Battery tests are ok, but when i unplug DC it shut down notebook.

 

Thnx :)

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Esteemed Contributor
Toffy
Posts: 648
Registered: ‎03-08-2013
Message 4 of 5 (267 Views)

Re: HP ProBook 4540s battery problmes

Zelijko

 

Please change your Windows Power Plan settings to highest performance reboot

 

an test it

 

Check your Bios settings or reset it

 

Please post your windows version

 

 

 

 

 

 

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Make it easier for other people to find solutions, by marking my answer with "Accept as Solution" if it solves your issue.






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Occasional Advisor
Zeljko
Posts: 9
Registered: ‎12-01-2008
Message 5 of 5 (265 Views)

Re: HP ProBook 4540s battery problmes

dear all,

 

i updated bios when i motherboard is replaced. Thing is that i tried same thing with freee DOS, Even Ubuntu booted from DVD. Its same issue.

 

battery seems OK, but when i disconnect DC adapter it shuts down laptop. It is hardware issue, im sure of it, so im seeking is anyone had similar issue and solve it?

 

BIOS is updated with latest.

 

and yeah currently on harddrive is Windows Proffesional 64bit

 

thanks in advance.

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