vivadatv.org

You have to disable driver signature enforcement in the advanced startup options, see this link:

http://community.spiceworks.com/how_to/ ... indows-8-1

73 Koert PA1KW

A permanent solution but less secure is to execute following commands:

bcdedit.exe -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING ON

It will show a watermark in the lower right corner with a message that you are running in test mode.

Use at own risk

73 Koert PA1KW