Showing results for 
Search instead for 
Did you mean: 
Blue Screen Again
Posts: 1
Registered: ‎04-29-2019
Location: HU
Views: 221
Message 1 of 2

Z50-70 fan issue

Hello guys


I have an annoying problem with my CPU fan.


When i start the machine the CPU fan is running at max speed for a few sec after this it's stops and never turn back again. If i restart the machine it's doing the same thing.


I tried BIOS update and win update, but nothing.


What could be the problem ? 

Social Support Agent
Social Support Agent
Posts: 168
Registered: ‎09-06-2018
Location: PH
Views: 154
Message 2 of 2

Re: Z50-70 fan issue

Hello CrB1337!


During startup a lot of CPU time is used. Which may cause the CPU to heat up. This is why the fan will run at full speed and make a loud noise until it gets into windows, this is common.


If fan runs at a higher than expected speed, you can check this article:



Did someone help you today? Press the star on the left to thank them with a Kudo!
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.

Follow us @LenovoSupport on Facebook and Twitter!

Check out current deals!

Shop current deals

Top Kudoed Authors