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Andreas GieryicFlag for United States of America

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Keyboard not working on laptop running Windows 7

I recently purchased a Dell Vostro 1520 laptop. It came with Vista. I upgraded it to Windows 7 Professional within a few days. It ran fine for a month (according to the end user). Now it has lost all keyboard functionality. the mouse still works. the user did say he installed Webcam drivers updates and Windows updates prior to this happening.
 
I confirmed that it passed the hardware diagnostics and that the keyboard works in the BIOS. But, as soon as Windows 7 is up and running, no keyboard. I then tried to attach a known good Dell USB keyboard. It didnt work either. No "cap or numbers lock" keys lit up.

I performed a "system restore" to a known good earlier date. this did not help either

I then deleted the keyboard driver in "Device manager" and rebooted PC. Upon reboot, it reloaded the keyboard driver but still no keyboard functionality

Does anyone have any idea? I have never seen this before.

Its definetly a Windows issue and not a hardware issue
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As far as I know, no! I believe he did use a wireless mouse, thats it.
I tried safe mode. I saw only one keyboard driver. I'm not sure if I tried plugging in the usb keyboard in safe mode. Im not at that laptop at this time. Although, I doubt it will make a difference since the laptop keyboard did not work in safe-mode.  I will still try it when I get a chance.
You are referring to the keyboard integrated into the laptop, correct?
Also, check the BIOS settings to ensure that the keyboard is properly being enabled.  If you need more detailed information, post back.
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the issue happens with or without an external mouse and/or keyboard
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I unistalled the wireless mouse, rebooted and still no keyboard
I uninstalled the wireless mouse, rebooted and still no keyboard
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jazzIIIlove
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Also, if there is any partition free, could you install ubuntu and check for the keyboard again, if you don't have, maybe you can create a CD bootable or usb linux (knoppix) and boot with it and see what happens. You can google for that bootable stuff.

Best regards.
Folks, lots of ideas were mentioned to no avail. I finally ended up going to the very first "System Restore" point that was created right after the Windows 7 update took place. This resolved the issue. Now there are several Microsoft Updates that have queued up. Im installing them a few at a time to see if this helps locate the initial culprit.

Thanks for all the input.
Basically I performed the first "System Restore" restore point right after Windows 7 update from Vista to Windows 7.

I didnt want to install 3rd party programs. the best fit was the "System Restore" . I ended up reinstalling all the required MS updates. the keyboard seems to work fine now. Thanks for all the input
It seems DELL Vostros may have problems with the keyboards as my link says. If the reaction of the keyboard is slow, I recommend changing the keyboard stuff if under warranty.
jazzlllove - but if the Dell diagnostics pass the keyboard test and the fact the keyboard worked fine in the BIOS, Dell wouldnt replace it. This was in fact a driver and/or software issue.
Thanks for the input
Have you checked with Dell about a BIOS update that may deal with W7 issues?