Similar situation here except everything I have is brand new. I bought the Vive Pro by accident, so i didnt have base units or controllers. I bought them all individually and my screen goes grey every few minutes making it unusable. The error on the screen says it is a tracking problem. I have been through a cosmic ton of 'fixes' on the web including the latest SteamVR beta software AND adding a USB riser card which came today. (Inateck Superspeed 7 Ports PCI-E to USB 3.0 Expansion Card) The Vive Pro is connected to this riser card all by itself. Base units are green lit, channels b and c. Everything is appearing correctly in SteamVR (beta) and it will just go grey in the visor and the tracking error will come up. I am at my wits end. I have spent well over $1000 on this and have the same issue. I was about to pack it all up and send it back when i found this thread. Please Help! You can find my system specs as follows: (I have most of it disconnected to see if i could whittle down the culprit) Intel Core i7-6700K @ 4.0GHz 32GB Crucial RAM EVGA GeForce GTX 1080 Ti Sabertooth Z170 Mark I MOBO Samsung 950 PRO M.2 SSD Shure SM7B Microphone ART Voice Channel Sennheiser PC 373D headset Thrustmaster T150 Wheel (not connected) Thrustmaster TH8A Add-On Shifter (not connected) Thrustmaster T3PA Pro Pedals (not connected) Pro Flight X-56 Rhino H.O.T.A.S. System Razer Lancehead - Tournament Edition Razer Tartarus V2 (not connected) Razer Cynosa Chroma Keyboard Razer Kiyo LED lit Webcam Please Help.
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