System must have pci simple communications controller driver installed correctly. it displayed in device manager list with yellow mark in case driver not install. to find it you need to go device manager > other devices > pci simple communications controller. when you install the driver then you don’t see yellow mark again.. This page contains the driver installation download for pci simple communications controller in supported models (k53e) that are running a supported operating system.. More about pci simple communications controller driver missing phillip corcoran feb 8, 2014, 8:24 am go back to your asus download page and look for "chipset" driver and "modem" driver..
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