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After installing windows 10 on a Lenovo Thinkpad x250 laptop there are 6 missing drivers. These are SMbus controller, PCI Simple communications controller, PCI data acquisitions and signal processor controller, PCI device, Unknown device, Unknown device. The correct drivers are Intel engine management interface, Intel engine management interface, Intel 5th gen intel core thermal management console 9ca4, realtek PCIE cardreader, Synaptics FP sensor, Lenovo PM device. All can be updates in device manager or update operating system. Instructions below.
Don`t forget the correct power supply is 20v 2.25a, 3.25a, 4.5a. Yellow tip