How to Install ARS-USB Driver in Windows 8

Installing ARS-USB driver in Windows 8 can give problems as the driver is not «digitally signed «, ie Windows 8 does not see them as Windows 8 drivers. If you try and turn off this facility by using:


  • bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS
  • bcdedit.exe -set TESTSIGNING ON


In the command window you can get back error message to say you cannot modify this setting due to Secure Boot Policy. You will have to go into BIOS and switch this off. Some PC you will be able to get into the BIOS on start-up by hitting function keys ( look in your PC manual ) then go to Security and follow the details from section 10 below. Most late PC will not allow this and you will have to follow the procedure below.

How to turn off Secure Boot


Move mouse to bottom right corner to display «Chimes Bar » select and click:-

1 Settings
2 Change PC settings
3 Update and recovery
4 Recovery
5 Advanced Start-up then «restart now »
6 Troubleshoot
7 Advanced options
8 UEFI firmware settings then «restart »
9 Press F10 for BIOS setup
10 Use arrow keys to step to » Security »
11 Use arrow down keys to select «Secure Boot Configuration » Return key to select the F10 to accept
12 Use arrow down key to select «Secure Boot » then side arrow key to change to «disable» then F!0 to accept changes
13 Use arrow keys to step back to » File » then down arrow to «Save changes and Exit » hit enter and enter again to exit BIOS programme. You will be then asked to enter a 4 digit code. This will be displayed on the screen, just type this in using the numeric keys and hit return keys, your PC will now restart. Now continue to Switching off test signing section 14

14 How to Switch off Test Signing


1 Right click bottom left Windows Icon and select » Command Prompt ( ADMIN ) » and accept
2 Enter in the command prompt window:

  • bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS then hit return key

you should see operation completed successfully message
3 next enter command:

  • bcdedit.exe -set TESTSIGNING ON then hit return key

again you should see operation completed successfully message.


15 You can now install the ARS-USB driver as normal
16 You must now go back to section 14 and switch the Test Signing back on by using the same procedure but using the following commands:



  • bcdedit -set loadoptions ENABLE_INTEGRITY_CHECKS
  • bcdedit -set TESTSIGNING OFF


Now reboot PC

17 Lastly you will now have to repeat steps 1 to 13 again but take the «Enable» option when in section 12.

Hope the above helps, I cannot be responsible for any errors in the above write up its just a guide, it may be different on other machines please check yourself, but it gives you an idea of what needs to be done to install unsigned drivers. Please read all screens as you proceed and BE VERY CARFUL WHEN IN BIOS AND DOUBLE CHECK before to executing a command.

Dave G0BCW

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