Lenovo ThinkPadX240 and the X250 , these two models of End keys are a bit different: in the default Fn When you edit a document in the general context, press the Home key to return to the beginning of the line, and End but not at the end of the line, only to cancel Fn the lock will have a normal effect.
Fn key is locked, Insert keys also do not work correctly.
these are ThinkPad X240 and the X250 Design of BUG .
Solutions : Install the latest version of BIOS .
X250
Applicable system: win8.1_x64 , win7_x86_x64 : http://think.lenovo.com.cn/support/driver/driverdetail.aspx? deditid=8520&doctypeid=doc_type_driver&osid=231&treeid=12004&args=%3fyt%3dpt%26categoryid% 3d12004%26codename%3dthinkpad+x250%26searchtype%3d0%26wherepage%3d2%26osid%3d231
X250 CD version
Applicable system: win8.1_x64 , win7_x86_x64 :
Http://think.lenovo.com.cn/support/driver/driverdetail.aspx? deditid=8521&doctypeid=doc_type_driver&osid=231&treeid=12004&args=%3fyt%3dpt%26categoryid% 3d12004%26codename%3dthinkpad+x250%26searchtype%3d0%26wherepage%3d2%26osid%3d231
x240/x240s
Applicable system: win8_x64 , win8.1_x64 , win7_x86_x64
Http://think.lenovo.com.cn/support/driver/driverdetail.aspx? deditid=8425&doctypeid=doc_type_driver&osid=231&treeid=11383&args=%3fyt%3dpt%26categoryid% 3d11383%26codename%3dthinkpad+x240%26searchtype%3d0%26wherepage%3d2
x240/x240s CD version
Applicable system: win8_x64 , win8.1_x64 , win7_x86_x64
Http://think.lenovo.com.cn/support/driver/driverdetail.aspx? deditid=8426&doctypeid=doc_type_driver&osid=231&treeid=11383&args=%3fyt%3dpt%26categoryid% 3d11383%26codename%3dthinkpad+x240%26searchtype%3d0%26wherepage%3d2
ThinkPad How products are upgraded BIOS Program:
Http://think.lenovo.com.cn/htmls/knowledge/detail_125066223240648552.html
This article is from "Helpdesk those things" blog, please make sure to keep this source http://chongyang.blog.51cto.com/5915849/1695458
Lenovo x240/250 The End key is not working properly when the Fn key is locked