Not installed before Vivado are good, normal download, no problems, and then it has been used Vivado, today opened ise ready next firmware, the results on the error, Device Manager drivers are installed, restart repeatedly uninstall after multiple computer still does not work, then the Internet found a similar solution to the problem.
xilinx has six official solution, you can reference.
https://china.xilinx.com/support/answers/30184.html
I have not tried, and then I remembered the original equipment manager jungo like driving, I can not anymore, then the online search installation is as follows:
(1) cmd open drive path, CD C: / the Xilinx / <ISE_version> / ISE_DS / the ISE / bin / NT64
(2) To uninstall the jungo drivers type the command: wdreg -compat -inf windrvr6.inf uninstall
(3) To reinstall the jungo drivers type the command: wdreg -compat -inf windrvr6.inf install
Note: cmd must be run as an administrator, or can not perform!
There is a drive huangsi exclamation mark after you install, uninstall reinstall.
Then re-run impact, successfully resolved!