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Paper Tape
Posts: 2
Registered: ‎01-09-2014
Location: uk
Message 1 of 4 (1,071 Views)

lenovo ideapad z500 laptop won't boot up without power cable plugged in

Hi there

My z500 cannot boot up without power cable plugged in. Usually,a few seconds after I saw the lenovo logo,the system will suddenly shut down just like the battery was removed.however,if I connect powercable to the laptop and power on,everything is fine,I can enter windows 8,or ubuntu,after I enter OS,I can disconnect the power cable without any problems.the battery is healthy and can last for more than 2 hours.Is there any one have any idea what's the problem and how to solve it

so far I tried the following methods:

1.update BIOS

2.update battery firmware

3.reset BIOS

 

none of them worked for me

Former Employee
Posts: 2,835
Registered: ‎03-20-2012
Location: Malaysia
Message 2 of 4 (1,053 Views)

Re: lenovo ideapad z500 laptop won't boot up without power cable plugged in

Hi maoxiaomin,

Thanks for posting and welcome to the community. Based from your post does sound a bit similar to a machine I have which is the Y500. In my case I had to send my machine in to servie for board replacement as they detected it to be faulty.

However in your case, I'm not saying that this is the exact same case but let look at the the possibilities first and if all still fails you'll need to contact our service team for further diagnosis.

Understandably we've established that you've update the BIOS, battery firmware and ever rest you BIOS.

Firsting first though could you uninstall the Lenovo energy mangement and reinstall it back from the Link below

Win8 :
http://download.lenovo.com/consumer/mobiles/em8.08.0.2.4.exe

Win8.1
http://download.lenovo.com/consumer/mobiles/em8180214.exe

Hope this helps and please do post back your results.

Regards
Paper Tape
Posts: 2
Registered: ‎01-09-2014
Location: uk
Message 3 of 4 (1,016 Views)

Re: lenovo ideapad z500 laptop won't boot up without power cable plugged in

Hi thank you very much for your reply

I tried the method you mentioned in your post,which doesn't help in my case

it seems I need t o contact the service centre to get further support.

regards

Former Employee
Posts: 2,835
Registered: ‎03-20-2012
Location: Malaysia
Message 4 of 4 (991 Views)

Re: lenovo ideapad z500 laptop won't boot up without power cable plugged in

Hi maoxiaomin,

Thank for posting back.

Sorry we could not be of further assistance and please do contact our service, Should you require further assistance please do not hesitate to post back in the forums.

Regards
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