Despite forced install (no driver signature required), USB still won't install an audio peripheral

takearushfan82

Honorable
Jun 10, 2017
144
4
10,585
Hi,
I have a guitar recording USB device that will supposedly install after forcing no signature to be required for drivers, which I thought was the problem. I read a security update for Windows should help but no. I'm on Windows 7 and this was a $100 device. Please help.
 

takearushfan82

Honorable
Jun 10, 2017
144
4
10,585

It's a USB Scarlet Solo. I did manage to make it work but only due to upgrading to Windows 10. Short of that, even the vendor seems puzzled.