02-19-2012 04:55 AM - last edited on 06-22-2012 09:23 AM by Mark_Lenovo
My 2 months old T420s declines to boot since this morning.
After pressing the Power-Button it starts to alternatingly flash the Power-Button light and the fingerprint reader LED.
Nothing else happens, no fan starting to run or anything else.
I haven't changed anything since yesterday when it booted with no problems.
Does anyone know what this could be?
Solved! Go to Solution.
02-19-2012 05:46 AM
I just discovered something else, when the Power-Button flashes up the Battery LED is blinking green.
This also happens with just the external Power-Supply connected without any battery.
02-19-2012 03:53 PM
02-19-2012 11:16 PM
Check the USB ports whether there is a short circuit caused by a missing plastic flap.
02-20-2012 08:44 AM - edited 02-20-2012 09:45 AM
At least someone else has this problem, too! Thought I was the only one while scanning through different boards for help.
Removing Battery, AC and pressing the power button doesn't help. That was actually my first attempt to fix it
I've checked the USB ports and they all look ok, no missing plastic flaps, everything's solid and at it's place.
Guess I'll just call the support tomorrow and see if they can help me...
02-20-2012 11:53 AM
02-21-2012 08:12 AM
For this particular scenario, it is most likely the system board. It is probably still a good practice to pull the battery and AC and try to reset by pressing and holding the power button several times, for several seconds each time, and then re-attaching AC and try to restart.
If the symptoms remain, please contact service for assistance.