Same issue here. Mine was with an asus 15 inch portable usb-c only monitor. worked great with my lenovo x1 yoga but no go on the surface book 2. thought i was upgrading but beginning to realize this was a severe downgrade in many ways. Any solutions ot make the usb c port work reliably would be helpful- carrying around the dock would really be Select Config and then click USB. The window should list USB BIOS support as [Enabled]. For ThinkPad 600, 600E, 770, 770E/ED, 770X, and 770Z systems. Press and hold the F1 key and then turn on the computer. Hold the F1 key until the Easy-Setup menu appears. If a password prompt appears, type the correct password. Select Config. Open each folder and look for dch_setup.msi. On my laptop this file was located in folder {AE3AECF5-A0B2-4E7A-AAF5-5FC86D3B1077}v1.44.6.0. - Now, start dch_setup.msi and it will install w/o any errors. - Go back to step 1. and install thunderbolt firmware. - Reboot machine. Now, all usb-c devices will stay connected. I have also tried to do a hard reset on my laptop, problem persists. I have also tried to completely reset my laptop to factory settings, it fails. I have also freshly reinstalled windows 10, problem still happens. I recently had to send my laptop to get fixed due to my lid of my laptop becoming unhinged from the base, into SquareTrade to be Follow these steps to uninstall the USB Controller Driver. a. Press Windows key + X and select Device Manager. b. Search for USB Controller Driver and expand it. c. Right click on the drivers one after the other and select Uninstall. d. Now restart the computer to reinstall all those drivers. 4YMP.

laptop usb port keeps disconnecting