If Steam was installed in a non-default directory, your SteamVR config/log paths may be referring to non-existent directories.

To fix your SteamVR installation path:

1. Navigate to: ...Steam/steamapps/common/SteamVR/bin/win64
2. Run vrpathreg and fix the paths to the correct drive and directory, or delete the openvr.vrpath file in user/AppData/Local/openvr

Ensure that hidden files are set to show on your system:

1. Click the Start button > Control Panel > Appearance and Personalization > Folder Options
2. Click the View tab
3. Under Advanced settings, click Show hidden files and folders, then click 'OK'

On Windows 10, do the following to show hidden files/folders:

1. Select the Start button, then choose File Explorer
2. Select the View tab
3. Check the Hidden items check box to view hidden items

Some software has been found to conflict with SteamVR or SteamVR driver installations. If you have any of the following software installed, try uninstalling it and re-testing:

• Razer Synapse
• Asus AI Suite
• Avast antivirus
• JDS Labs ODAC USB Audio device
• Older Apple Cinema displays with devices attached through USB
• TP-LINK 300Mbps Wireless N PCI Express Adapter TL-WN881ND

USBDEVVIEW is a USB utility that can be used to remove old USB device records from Windows. Removing these records can help with certain situations where USB drivers are corrupt or incorrectly installed, which might cause your HMD or controllers to not be recognized.

Please note: These instructions recommend using a third party application called USBDEVIEW.

This application was not developed by Valve and we provide no support or guarantee regarding its use.