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.