disabled keyboard


I'm trying to fix a client's Sony Vaio VGN-NW21EF notebook
The keyboard is non responsive in Windows 7
The FN keys work fine
The keyboard works fine in the BIOS setup or in a booted Live environnement
Tried safe mode, and launching another user profile : no deal

I tried updating Windows, updating the Chipset: to no avail
I ran sfc /scannow : no improvement

Checked app & system log: wouldn't load : missing pluging apparently

Anything else to check before resigning myself to the reinstallation of the machine ?

Yann ShukorOwnerAsked:
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I don't think the keyboard keys require plugins in windows. Did you try the exact keys that worked in the BIOS in windows as well? If they work and the others don't, I think there is the usual problem of Sony Vaio keyboard. I have two myself and both have some non-functioning keys.
Did you try to uninstall keyboard from device manager and restart?
If that does not work, try system restore (or even reset BIOS to defaults)
and launching another user profile : no deal
I tried updating Windows, updating the Chipset: to no avail
I ran sfc /scannow : no improvement

How did you do that if the keyboard wasn't working?
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Davy ParidaensCommented:
Hi Yann,

Check de device manager for driver errors and post the hardware ID here:
According the ID you can search for the drivers
This is an example of my Logitech keyboard ID

Gerwin Jansen, EE MVETopic Advisor Commented:
Can you try attaching an external keyboard?

If the external keyboard is working, use that to do updates (Windows) and Sony (Vaio update).

See if that fixes the internal keyboard issue.
Yann ShukorOwnerAuthor Commented:
The virtual on-screen keyboard is a life saver

I did indeed try to remove the keyboard drivers, but the recreated instance brought no marked improvement

I installed an external keyboard : no joy (no LEDs either)
Install the PC's chipset drivers if available.
Yann ShukorOwnerAuthor Commented:
thanks for your response
As stated in my initial post; I had updated the chipset driver
Gerwin Jansen, EE MVETopic Advisor Commented:
Has there by any chance been a Windows10 install offer (or try) on this machine? I believe these (older) machines are capable of running Windows10. Just a thought.
Sorry I had forgotten that you mentioned the chipset driver.
i would try a system restore first - as pedrag Jovic suggested
if that does not help  - run a repair :

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Yann ShukorOwnerAuthor Commented:
I tried an inplace upgrade, but that failed so I installed Windows 7 from scratch and copied over the user's data
thanks for all your help
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