Keyboard and touchpad not working

Hi EEs,
I really do not know what to try else. I have Toshiba Tecra A10-11M PTSB0E on the table. Problem is that built-in keyboard and touchpad do not work in windows (x64 Windows 7 Ultimate). In BIOS, or booted live CD both work without problems. If I plug USB mouse in the Win it works as well. So there is definitely somthig wrong in interaction with OS. In device manager both devices are with yellow exclamation (PS/2 Keyboard and PS/2 Mouse).
Mouse HW ID is ACPI/PNP0F13
Keyboard HW ID is ACPI/PNP0303
Mouse and Keyboard driver points to C:\Windows\System32\Drivers\i8042prn.sys (then second line for mouse is mouclass.sys and for keyboard kbdclass.sys)

What I already did:
- disassambled laptop, clean from dust and re-install all connectors (it was before I tried live CD - shame on me)
- ran chckdsk c: /f
- ran sfc /scannow
- ran MS update
- Last known good configuration
- ran Kaspersky Rescue Disk 10 for viruses/Malware
- uninstalled devices and scan for new HW
- unistalled devices, deleted nonINF files from C:\Windows\Inf and rebooted machine
- downloaded Touchpad driver (Alps) for x64 Vista for Tecra Tecra A10-11J (from Toshiba website)
- downloaded Synaptics driver

I do not have recovery points.
till now nothing else helped me. I really want to avoid Win reinstall which I am almost sure will solve the problem and I know it.

Thanks for suggestions leading to success :)
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helpfinderIT ConsultantAsked:
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helpfinderConnect With a Mentor IT ConsultantAuthor Commented:
Thanks guys, nothing has work for me, so reinstall did the trick
have you tried removing the devices while in 'safe mode' ?
I know you said you want to avoid a Windows reinstall, but have you considered a Repair Install?
It is relatively painless since it does not affect personal data or installed programs.  A backup first is always a good idea.
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Install the PC's chipset drivers.
helpfinderIT ConsultantAuthor Commented:
@regmigrant -  I did, no success
@rindi  - I did, no success
@jcimarron - I am a bit skeptic when I read "Do a Repair installation if: You DO want to preserve your user accounts, data, programs, and system drivers." in your provided link and I am almost sure this a driver related, but what can I lose (except data ;))

So repair as jcimarron recomended is not possible, because installation media I have and I used says newer version is installed than the one I am trying (maybe installation media is without SP1 and installed is, because installed OS is up to date)

OK, I have to say we are going to fresh install since no new idea is comming
You can download the appropriate .iso file from here, then burn it as an .iso file (image file)to a DVD and use it for Repair Install.
install all drivers :

fill in the proper OS and select 32 or 64 bit OS
helpfinderIT ConsultantAuthor Commented:
@nobus - did you check for suitable driver on that link you provided? because I can not see anything, maybe I am just missing something
i could not check since you did not provide all details needed on the site
helpfinderIT ConsultantAuthor Commented:
I provided manufacturer and model, also OS - what else is needed?
And of course I did check driver for touchpad on Toshiba´s official web site for my model before I posted question here, but unfortunetly I was not able to see any driver for touchpad even keyboard (that´s I used touchpad driver from another Toshiba model as I mentioned in my question as well), that´s why I am asking it there is something in your link I can not see or you know it´s important.
they ask for model, submodel type and more; just check on the site
but if the laptop was made for say xp and Vista, it's very possible windows 7 is not supported
BUT, this aside, you can always install slimdrivers, and let it search for your drivers; fast and free :
helpfinderIT ConsultantAuthor Commented:
I had to reinstall, because nothing provided worked for that poor Toshiba
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