Satellite Pro C850-15N - some keys do not work.

Am 90 per cent positive that this is not the fault of a broken keyboard keys do seem loose and work very well for a while.*
--
Basically, the other day I noticed the keys 3 and 5 were not work next to the f3 key (meaning I now have to go into the settings of brightness, whenever I want to increase it). I thought "I'll just reboot and see if that fixes anything" and he did... temporarily. I have to restart every time that I've lost the ability to use these keys, but now it does nothing.

There is no update which should install Windows (updated 8.1 update 1 recently).
There is no update options the keyboard driver (the box is grayed out).
There is nothing stuck, they seem not damaged or less they touch.

The features of my laptop;
Name of the operating system Microsoft Windows 8.1
Version 6.3.9600 Build 9600
Another Description of the OS is not available
Manufacturer of operating system Microsoft Corporation
Name of HOUSE system
The TOSHIBA system manufacturer
System model SATELLITE PRO C850-15N
System Type x 64-based PC
SKU PSKC9E-01J00JEN system
Processor Intel Core i3 - 2328M CPU @ 2.20 GHz, 2200 Mhz, 2 Lossnay, 4 logical processors
BIOS Version/Date Insyde Corp. 1.60, 27/06/2012
SMBIOS Version 2.7
Embedded Controller Version 1.70
BIOS Legacy Mode
---
* I asked this question on the Microsoft forums and I've learned to run the troubleshooter of material (did not help) and if defective, to search for the latest drivers for keyboard - seems to me later for my model, such as the toshiba site list any keyboard updates.*
---
I also grabbed the driver files if this will be of no use at all:
PS/2 standard keyboard
C:\Windows\system32\DRIVERS\i8042prt.sys
C:\Windows\system32\DRIVERS\kbdclass.sys

---
Can anyone give me any help? I'll buy a USB keyboard in a few weeks anyway, but for now, it's really annoying not being able to use these keyboard shortcuts: P

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> I asked this question on the Microsoft forums and I've learned to run the troubleshooter of material (did not help) and if defective, to search for the latest drivers for keyboard - I seem to have the most recent for my model, as from Toshiba Web site does not list the keyboard updates.

It seems that this opinion is not from Microsoft staff, but some users of the forum.
You should know that the drivers of keyboard (developed by Microsoft) are still part of the Windows System. Any Windows OS you use, the keyboard driver would be always installed as part of the OS. This means that the drivers of special keyboard DON T exist but system uses own driver...

You can check the functionality of the keyboard in USB external keyboard.
If external keyboard works properly, the internal keyboard is malfunctioning and must be replaced.

If the external keyboard does not work properly too, then I recommend you to recover the laptop using Toshiba HDD recovery. Otherwise, there could be question of motherboard (keyboard controller).

Tags: Toshiba

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