06-30-2015 07:21 AM
Recently the Monitor on my T420S failed. Following online message boards, I hooked up the computer to an external monitor and verified that the graphics card was ok as I was able to see the screen, but when attempting to type, I recognized that the keyboard was no longer functioning. Thinking that it was still related to the monitor, I purchased a replacement... but to my suprise, both the keyboard and monitor are still not functioning. With the new monitor I could see the startup screen with a light placed on the screen, but the keyboard shows no response at all. Good news is that I am able to remote into the machine so all the data can be transferred, but I would hate to lose such a great laptop that has been so good to me over the years.
Any thoughts on what the issue might be? Has the motherboard possibly failed? Open to any and all suggestions.
07-01-2015 04:42 AM
Welcome to Lenovo Community!
I am not sure about the system board, before confirming on that can you just try with reseating the both LCD cable and Keyboard cable.
I am little bit confused about the statement given (With the new monitor I could see the startup screen with a light placed on the screen), can you elaborate this or else provide the snapshot, so that we can verify the issue.
Hope this helps.
07-01-2015 05:28 PM
07-02-2015 03:18 AM
In this situation I would have visited Lenovo authorized service center. This hardware might be with system board or with individual parts, request you to get it checked with service center only.
Please click here to visit the link where you can get the list of support contact numbers, select the respective region and give a call.
Hope this helps.