Lenovo W550S - No Touchpad / Tracker Pad

[Ritchie_Uk]

Hi There

I purchased a Lenovo W550S about a year ago, and was really pleased.
Initially there was intermittent USB connection, which ended up being a bad connection

There was no TouchPad.
I ordered a pricey Pad that I was excited about, as I needed a solid machine for myself

It didn't Work, or should I say that still "No Touch Pad"
I was gutted, as I got the Laptop really cheaply

What next please?

Does anybody have any clues please?

I have taken the board out, and there and cant see any issues?

Thanks in Advance

[rogfanther]

Well, start with checking the flat cables between the touchpad and the motherboard. Are they installed ? Not mangled ? Are they installed in the correct orientation ?

[pc_okay]

Have you check it's not a driver issue ? try in Lenovo UEFI diagnostic utilty if it's available on this model at boot?
Or with fresh install of windows?

Could the touchpad you buy be just dead? or like rogfanther connection problem...?

[Ritchie_Uk]

Hi there Rogfanther and pc_ok

i replaced the Touch tablet and a new cable was installed

it still didn’t see it in device manager or even Linux

Could it be a faulty keyboard?

it’s such a great Laptop

Thankyou

[FriedFred]

Can there be found any voltage on the TP board? Can you find any data traffic on any data line? Is there any data traffic directly on the TP board?

[Ritchie_Uk]

UPDATE !!

Hi FriedFred and Folks - I just tested the Laptop after I installed the new Track Pad and Cable.
It didnt work before, even in Linux

I uninstalled the Drivers "Cleanly" and Reinstalled them

All seems to Work now to my surprise !!
The USB Ports were intermittently disconnecting, but that was solved, by re-soldering and cleaning the ports.
I am not truly sure why it has started working now, but it is and I will extensively test it in the Field

But thankyou for the Folks who posted any suggestions

[Ritchie_Uk]

Can there be found any voltage on the TP board? Can you find any data traffic on any data line? Is there any data traffic directly on the TP board?

Hi FriedFred

I will take some Voltage readings that I can refer to as a document on a working unit.
Still not sure what fixed it?

Probably a culmination of all 3 issues
Track Pad
Track Pad cable
Drivers

[pc_okay]

If you are curious and you feel advanturous you can try cross test

• With old touchpad new câble,
• old câble New touchpad
• old câble old touchpad…

Just for the science 😁

[Ritchie_Uk]

Hi pc_okay

That suggestions "Sounds Logical Captain" Spock Quote

I will very tentatively attempt to do that, so I can use the Pad as a Test Pad or throw it away

Thanks again