1. Execute the following commands from the command prompt with full administrative rights: bcdedit.exe /set nointegritychecks ON bcdedit.exe /set TESTSIGNING ON Each command should receive a successeful execution confirmation. 2. Reboot the computer while holding the "Shift" key. 3. In the subsequently opening screens: Choose an option ->> Troubleshoot ->> Reset this PC ->> Startup settings ->> Restart to change Windows options such as ->> Restart 4. After Windows restarts chose option 7) Disable driver signature enforcement. 5. Edit the registry by running "0000750A.reg" from the "MULTIKEY64" folder. 6. Run "INSTALL.CMD" from the "MULTIKEY64" folder. Lack of error messages would indicate successefull driver installation. 7. Run "hardlock.EXE" from the "Hardlock" folder. 8. Reboot the computer. Should you run into problems deleting the earlier instance of the multikey driver: 1. Run "REMOVE.CMD" from the "MULTIKEY64" folder. Lack of error messages would indicate successefull driver deletion. 2. Run the "infclean64.exe" utility from the "infclean05" folder for the final clean-up. You can turn off the test mode but in this case you will need to disable Driver Signature Enforcement. You can get rid of the "Test Mode" watermark by running "RemoveWatermark 7 X64.exe". Should you run into problems in the step 6 above please follow the advice provided by andy040670: 6. Start the Device Manager => right click the root directory => pick "Add legacy hardware" => "Next" => "Install the hardware that I manually select from a list (Advanced)" => "Next" (don't pick anything) => "Have Disk..." => point to the MULTIKEY64 folder => OK => agree to install the non-signed driver. An advice from aprimerov: If executing the "bcdedit.exe /set nointegritychecks ON bcdedit.exe /set TESTSIGNING ON" command causes an error you should disable the "Secure Boot" in BIOS. A huge "thank you" for the working x64 Multikey goes to http://testprotect.com. Sincerely, andyl
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