Consequently, Windows recognizes the hardware exists but cannot talk to it.
Older laptops (circa 2008–2012) sometimes have a built-in dial-up or fax modem that uses a PCI controller. Windows 8.1 may fail to automatically detect these legacy modems. pci simple communications controller driver windows 8.1
There are two stubborn scenarios with Windows 8.1: pci simple communications controller driver windows 8.1