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stongi
What's DOS?
Posts: 2
Registered: ‎09-07-2016
Location: UG
Views: 243
Message 1 of 5

Lenovo G580 laptop powersup the system but does not display

i have worked with this laptop for over two and half years without any difficulties but now for over 5 months, when it shuts down or restarts, it powers up the system with power lights on but shows black screen. when i try to open it, the hard disk is always hot but still nothing. when i remove the CMOS battery and put it back, it takes like 5 minutes and it displays. i dont i understand the sickness need your help thank you.

tripplec
Bit Torrent
Posts: 2,374
Registered: ‎03-08-2012
Location: CA
Views: 228
Message 2 of 5

Re: Lenovo G580 laptop powersup the system but does not display

You need a tech to assess it. Impossible to troubleshoot without doing tests and observing.

Eg. Fan - starts up, continues after boot up running
Power adapter voltage etc or other power issues. Air flow and likely more.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
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Support Specialist
Posts: 7,067
Registered: ‎11-30-2015
Location: PH
Views: 217
Message 3 of 5

Re: Lenovo G580 laptop powersup the system but does not display

Hi stongi , 

 

Greetings. 

 

In addition , you can start with power check out assuring integrity of both battery and ac adapter.

Was it removing the laptop battery or a coin cell cmos battery on the motherboard ?

 

We do have 2 symptoms that follows probable overheating issue . System normally shutdown/ restart to protect the processer for further damage cause by failure on dispensing the heat . Second is that overheating would need certain amount of time to cooldown before it can operate again.

How long would it stay on ? Would you be able to run diagnostics and temperature check?

 

Try turning it on without battery and harddrive .

Would the machine show any display ? Would the air vent produce warm exhaust?

Cleaning and further isolation would help determine probable points of failure . 

 

Update us how it goes.

 

Regards

 

 



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stongi
What's DOS?
Posts: 2
Registered: ‎09-07-2016
Location: UG
Views: 189
Message 4 of 5

Re: Lenovo G580 laptop powersup the system but does not display

Thanks for the reply,

when i removed the battery and harddrive and started it, nothing happened.

but when i remove the cmos battery and place it back, and power it on, the power lights go on and off for sometime and after it displays and i use it for the entire day. but when i shut it down or restart it, and power it back on again, the power lights go on and never displays for the entire day.

thank you

Support Specialist
Posts: 7,067
Registered: ‎11-30-2015
Location: PH
Views: 165
Message 5 of 5

Re: Lenovo G580 laptop powersup the system but does not display

Hi stongi , 

 

Would it not turn on the display even if you try to reseat the CMOS battery ? 

Among cases that I handled with same symptoms as yours, usually is bad display chip that ensuring thermal setup helps if not reball.

 

You may need to have this confirmed in a service repair center. 

 

Regards



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