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Posts: 35
Registered: ‎04-12-2011
Location: Qatar
0 Kudos

T420s Bios update issues

Hi guys..


I have a Thinkpad T420s (4174 - EE2) . 


let me explain the story first.:-  My laptop is not getting ON. Then I unplugged one of the RAM (4gb + 4gb) its works fine. I tried this faulty (which is not working with my laptop) on another T410 laptop  then that one also working fine. I tested the two RAM with PC Doctor and all tests were passed.


Finally I tried to update the BIOS from bootable CD and Windows then it giving the meassage -


   "BIOS Directory was not found. The process did not complete"


I found some thread with the bios updating issue with some other models and people are suggesting to change the system board. Do I need to change the system board or is there any other solution for this?


Guys please help me !!


Lenovo PLease help meee !!

Posts: 35
Registered: ‎04-12-2011
Location: Qatar
0 Kudos

Re: T420s Bios update issues

Guys there is an update !!


I updated my BIOS to the latest version.


But still hte problem with RAM..


Help me please !!!!!!!!!

Bit Torrent
Posts: 2,401
Registered: ‎04-08-2011
Location: USA
0 Kudos

Re: T420s Bios update issues

Is this a new SoDIMM you purchased to upgrade the RAM from 4 to 8?

Bit Torrent
Posts: 1,553
Registered: ‎03-08-2012
Location: Belleville, Ontario Canada
0 Kudos

Re: T420s Bios update issues

Its not clear what he's done with the Ram. All Ram is not compatible so if you bought third part some will work (G.Skill) and others WILL NOT WORK.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Windows 7 Home Prem - 64bit w/8GB
Z70-80 I7 - 5500U 16GB GB - 1TB HD Window 8.1 64bit FHD 17.3 inch Display, Nvidia G840 w/2GB memory