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Laptop Keyboard Not Working


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#1 sparkyuiop

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Posted 19 August 2007 - 08:10 AM

I have the above laptop that I took apart to clean the fans. I had to remove the keyboard in order to do this and when I put it back together strange things happened. The first time I started it only half the keyboard was working. I took it apart again to check the ribbon cable and it was seated and in place correctly. When I turned it back on, none of the keys worked again.
I have noticed though that when it turns on, the caps lock light flashes as it should. However I cannot enter BIOS or the windows boot menu or type anything when the OS has loaded.
I bought a new keyboard now and it does exactly the same thing so it's not that.
The USB keyboard works ok and I notice that when I put the caps lock on the caps lock light on the laptop keyboard also illuminates but the keyboard still does not work.
I have downloaded the latest bios from toshiba website but when I try to run it (it is a windows based program) it says "Failed UpdatePlatform". It is the correct bios though found here: http://support.toshiba-tro.de/tools/eula/info_eng2.asp
Any advice here would be appriciated.

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#2 garmanma

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Posted 19 August 2007 - 10:02 AM

I think it's more of a hardware problem than BIOS. What about the other end of the ribbon cable? Did you tug too hard on that? Do the soldered connections look solid? Go over your work again and take your time and check as closely as possible
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#3 acklan

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Posted 19 August 2007 - 10:47 AM

Look inside the socket that the ribbon is insert. Make sure none of the pins are bend or missing.
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#4 sparkyuiop

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Posted 19 August 2007 - 12:34 PM

The socket looks fine, as do the connections and pins. I even had a magnifier on it. Oh well. Another one bites the dust!




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