Support in other languages: 
Reply
Token Ring
LinYu
Posts: 185
Registered: ‎02-04-2009
Location: USA
0

Re: T420s Fan noise Issue


pleon wrote:
Well, i just did it in Device manager, open properties of that Lenovo device and on Driver Tab there is a possibility to uninstall. In dialog box check the checkbox to physically delete the driver from the disk. Thats all.

Looks good, but please be patient and explain this to me:

 

1 - How is that Lenovo device called in your system? Aren't you referring to your system's thermal unit? I don't seem to find in the Device Manager anything that even remotely appears to be related to it.

 
2 - So you uninstalled the driver, and then what happens? Are you experiencing any issues, at all? Does everything seem to be working fine? Does the fan still work?...

 

Thanks for your help.

 

 

 

 

 

 

802.11n
pleon
Posts: 292
Registered: ‎12-01-2009
Location: Czech Republic
0

Re: T420s Fan noise Issue

Well, i just removed device form Monitor part in Device Manager, you shoud have Lenovo Monitor device. And after that, fan started to work properly, reducing RPM based on temperature. Simple.
----------------------------------------------------
Lenovo T440s, 20AQ0067MC, Windows 8.1 Pro x64 UEFI, Samsung 840 EVO SSD 250 GB, 8 GB RAM
Lenovo T430s, 2356LQG, Windows 8.1 Pro x64 UEFI, Intel 520 SSD 180 GB, 8 GB RAM
Lenovo T420s, 4171-6SG, Windows 8 Pro x64 UEFI, Intel 320 SSD 120 GB, 8 GB RAM
Lenovo T400s, 2808-CYG, Windows 7 Ultimate x64
Token Ring
LinYu
Posts: 185
Registered: ‎02-04-2009
Location: USA
0

Re: T420s Fan noise Issue

 

 

So you have no monitor driver and no problems now... Amazing.  :smileysurprised:

 

 

Fanfold Paper
sunan126
Posts: 17
Registered: ‎01-17-2012
Location: US
0

Re: T420s Fan noise Issue


pleon wrote:
Well, i just did it in Device manager, open properties of that Lenovo device and on Driver Tab there is a possibility to uninstall. In dialog box check the checkbox to physically delete the driver from the disk. Thats all.

Thanks. I'll take a try. If everything goes fine, I'll report it here.

Fanfold Paper
alvoha
Posts: 6
Registered: ‎01-07-2012
Location: Denmark
0

Re: T420s Fan noise Issue

[ Edited ]

@Mark_Lenovo Hey Mark! We're still waiting for an update!

 

2 months ago I tweeted a question to the official @lenovo twitter account, asking if you were ever going to fix this issue. The @lenovoforums account (which I understand you, Mark, is in charge of?) answered "we've addressed many of the cases through BIOS update. Still some remain. Need a sample that isn't ...

 

So my question is: Why the heck aren't you cooperating with all the people in this thread who're having problems???

 

 

Anyway here's an interesting observation I made yesterday. I met another guy with a t420s that didn't make that annoying high pitched noise, but more like a deep humming, even though his machine was also spinning away at 4000RPM. I'm fine with the fan spinning at 4K if it's just not making that annoying whiny noise. Could it be that some of the fans are just more noisy that others? And the sound problem could be solved by replacing the fan? Has anyone had success replacing the fan?

 

And another question.

On this page there's listed two different part numbers for the fan part (and another two numbers for optimus fans). What is the difference? One is labeled 'not to be replaced by user' and the other is not?

lead_org
Posts: 20,722
Topics: 128
Kudos: 1,230
Solutions: 1,313
Registered: ‎12-19-2008
Location: Australia, Melbourne
0

Re: T420s Fan noise Issue

Lenovo usually uses two companies for the fan.

In the past Fukuwara and Toshiba are the major manufacturer for ThinkPad laptop fan. But nowadays, Panasonic fans are also used.

So check which fan you have, i think there should be a sticker on the fan itself, and check which fan that the other person has. You can reach the fan by taking off the keyboard.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
Punch Card
calkenneth
Posts: 138
Registered: ‎11-15-2009
Location: Stockholm
0

Re: T420s Fan noise Issue

For what it's worth, my first T420s used an AVC BATA0507R5U fan. When they replaced the fan, it was also an AVC.
Fanfold Paper
Helvetia
Posts: 20
Registered: ‎08-13-2011
Location: Germany
0

Re: T420s Fan noise Issue

@ LinYu & pleon: Thank you for the hint.

Unfortunately there is no improvement of the high spinning fan behaviour after uninstalling the display driver.

802.11n
pleon
Posts: 292
Registered: ‎12-01-2009
Location: Czech Republic
0

Re: T420s Fan noise Issue

Well, strange, i made test on 2 T420s devices and it helped on both of them.
----------------------------------------------------
Lenovo T440s, 20AQ0067MC, Windows 8.1 Pro x64 UEFI, Samsung 840 EVO SSD 250 GB, 8 GB RAM
Lenovo T430s, 2356LQG, Windows 8.1 Pro x64 UEFI, Intel 520 SSD 180 GB, 8 GB RAM
Lenovo T420s, 4171-6SG, Windows 8 Pro x64 UEFI, Intel 320 SSD 120 GB, 8 GB RAM
Lenovo T400s, 2808-CYG, Windows 7 Ultimate x64
Paper Tape
marcinm
Posts: 4
Registered: ‎05-25-2012
Location: Poland
0

Re: T420s Fan noise Issue

Thanks,

 

Finally, my t420s (i5, 256ssd, 8gb) is quiet after uninstalling of "Lenovo - Display - ThinkPad Display 1600x900" driver. It was really annoying.

 

Marcin