UPDATE 3/8/16: After finding a critical installation issue, the team has replaced yesterday's driver (364.47) with today's new driver (364.51).
This driver has been submitted to Microsoft for WHQL-approval and we will update the driver package online as soon as we have the certified package.
We had received reports of some users having issues installing driver version 364.47. Initial investigation suggests the issue was related to doing an "Express" installation. If you happen to have a pending installation of 364.47, we recommend that you do not install it and either use the new 364.51 beta version or wait for the WHQL certified version.