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kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 882
Message 1 of 10

P50 keyboard stops functioning

Running the latest Windows 10 64-bit, all drivers up-to-date according to the Lenovo tools, but the only key that seems to work on the keyboard is the Function Lock key in the upper-left and the Windows-logo key.  All others, when depressed, result in no input to the system.

 

Has anyone else experienced this?  Is this a faulty driver issue in a recent update?  Or is this a hardware failure?

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 822
Message 2 of 10

Re: P50 keyboard stops functioning

Can you manage to toggle the speaker mute LED during or after Windows boot?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 809
Message 3 of 10

Re: P50 keyboard stops functioning

Oddly enough, yes.  I just powered up the machine and before the Lenovo splash screen, it allows me to toggle that off.  As the system comes up, it re-lights.  NumLock goes off when the Mute is toggled, but by the time the OS comes up, both are back on and cannot be toggled off.

 

Other keypresses result in no response once the OS is up.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 797
Message 4 of 10

Re: P50 keyboard stops functioning

Are you able to get the system into Safe Mode or BIOS settings and see if you get any keypresses working there?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 795
Message 5 of 10

Re: P50 keyboard stops functioning

I restarted and entered Safe Mode.  Using Notepad, the built-in keyboard remains unresponsive while the external works.  Speaker mute, etc. operate the same as before and cannot be toggled off.  CapsLock also cannot be enabled.  Esc/FnLk does work, however.

kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 788
Message 6 of 10

Re: P50 keyboard stops functioning

Lenovo is shipping me a box for the unit.  I presume this is a hardware problem and not a driver issue?  I have seen reports that the Synaptic drivers cause issues under some conditions and Registry changes sometimes work.  I would prefer not to ship this in if it's not necessary and can be corrected with a driver or software change.

 

Any more suggestions?

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 777
Message 7 of 10

Re: P50 keyboard stops functioning

I suppose the last check for whether it's a hardware issue would be to boot into a live Linux environment and see if it works there.

I know that Synaptics can be set to disable the internal touchpad when an external mouse is attached, but I don't know of an equivalent option for the keyboard.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 771
Message 8 of 10

Re: P50 keyboard stops functioning

'twas a good idea, but...

 

Booted from LinuxMint live media and while some behaviour changes - NumLock and Speaker Mute are not enabled post-boot, most behaviour remains the same.  No input from most keys on the keyboard, NumLock cannot be toggled, etc.  So this is a hardware failure it would appear.  Again.

 

This will be the 4th mainboard in this machine in 8 months.  This is becoming tiresome.  This machine is obviously a lemon.  I'm going to push for a swap with a new, non-horked machine.

 

Thanks for the input, though.

rvcjew
802.11n
Posts: 327
Registered: ‎08-27-2013
Location: US
Views: 762
Message 9 of 10

Re: P50 keyboard stops functioning

That's nuts they should really swap your whole unit I agree it sounds like something is continually shorting your board or something.
I own a Y510p SLI (retired), Yoga 2 Pro, X220T, P50 4K (sold), X1C5
kylea_ia
Paper Tape
Posts: 6
Registered: ‎09-10-2017
Location: US
Views: 747
Message 10 of 10

Re: P50 keyboard stops functioning

After testing with the Live linux yesterday and powering it down, I wanted to power-up this morning and pull data off of the two SSDs before shipping back to Lenovo for repair.  Now I have no video on the built-in display.

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