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FroggestSpirit
What's DOS?
Posts: 2
Registered: ‎06-21-2016
Location: US
Views: 225
Message 1 of 4

Yoga 11s not booting

I noticed that my yoga 11s was running hot, so i powered it down, unplugged it, and carefully took it apart to clean the fan. After reassembling it, it no longer boots up. The power led will come on for around 1-2 seconds, and sometimes the fan will start, but then it shuts down.

Sr Support Specialist
Posts: 8,164
Registered: ‎11-30-2015
Location: PH
Views: 212
Message 2 of 4

Re: Yoga 11s not booting

Hi FroggestSpirit  , 

 

Welcome to the Community Forums. 

 

Seems that now it is a no post (power on self test)  issue as the machine initially receives power but turned off .

Parts in as the question is the systemboard , cpu ,ram,  heatsink and fan . 

Check back the ram/ cable connection and reapply thermal paste as needed. 

Check also for hotspots or burnt marks . 

 

Update us it goes. 

 

Regards



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FroggestSpirit
What's DOS?
Posts: 2
Registered: ‎06-21-2016
Location: US
Views: 193
Message 3 of 4

Re: Yoga 11s not booting

everything looks to be in place, although the power led blinks on and off, about 4 seconds off, and 1 second on

Sr Support Specialist
Posts: 8,164
Registered: ‎11-30-2015
Location: PH
Views: 178
Message 4 of 4

Re: Yoga 11s not booting

Hi FroggestSpirit , 

 

Greetings. 

 

Perform power checkout (page21) making sure that it is not caused by the ac adapter.

 

The machine would still continue POST ( power on self test ) even without a harddrive. 

Try turning it on without it and check if there is any difference so we know that it is not a harddrive or booting issue.

 

If the same remove the memory and turn on , as part of the POST process beep codes would be heard saying that it doesn't have any RAM but some would not have beeps depending on the model. Observe any change on the behavior of the Power LED and other status lights.  Try one RAM at a time swapping it on each available slot to isolate RAM issue. 

 

Now , check on heatsink and fan making sure that fan would not be having a hardtime spinning and reapply thermal paste if needed.  (do note that if you need further tools and skill on the task , please have a service center check on probable systemboard issue ).

 

Here is the hardware manual for further guide , FRU list are the parts intended for the system to match it from the parts look up site

 

Update us as it goes.

 

Regards



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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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