I have a Toshiba Satellite C50-A-1CK. The hard drive died so i have replaced that and reinstalled windows 8.1 on it, so far so good!
I have installed all the drivers needed from the Toshiba website but when installing the wireless driver (Atheros) and rebooting i get a BSOD which says the wsimdx.sys file is causing the issue and that relates to the wireless driver. I have tried using different versions of the driver all of which do the same thing. I have tried the latest driver from the atheros website.
This is getting very frustrating now so if anyone has any ideas i'd like to hear them!