T420s Power issue

T400/410/420 and T500/510/520 series specific matters only
Post Reply
Message
Author
jgrjr
Posts: 10
Joined: Wed Jun 04, 2008 9:02 am
Location: Pittsburgh PA

T420s Power issue

#1 Post by jgrjr » Tue Oct 18, 2011 1:55 pm

I have a T420s and whenever it is unpluged and turned off it seems to lose charge. If I have a full charge and turn off the machine with no power attached it drops by as much as 15% within a few hours. If unused over a few days it will run down to 50%. I have tried different power settings and cannot find anything to solve the problem. Is this normal. The fingerprint sensor shows a green LED when the machine is off. This is a wake funtion I cannot seem to disable.

Any ideas?

Colonel O'Neill
ThinkPadder
ThinkPadder
Posts: 1359
Joined: Tue Oct 27, 2009 8:03 am
Location: Vancouver

Re: T420s Power issue

#2 Post by Colonel O'Neill » Wed Oct 19, 2011 11:48 am

Sounds like the fingerprint reader.

You should be able to disable it either in the Lenovo Fingerprint software, or in BIOS.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen & MB168B+
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T400/410/420 and T500/510/520 Series”

Who is online

Users browsing this forum: No registered users and 3 guests