PCSGU250 with Windows 8.1 no driver

After using both the Windows 8 and 7 drivers from the site the computer recognizes the device but no driver. The green light does not come on when I plug the scope in to the usb. It worked with windows xp no problem. Any help would be appreciated.

On 64bit Windows 8.1, you have to disable the driver signature enforcement to install the driver.

Here are the instructions how to disable the driver signature enforcement on Windows 8.1:
howtogeek.com/167723/how-to- … d-drivers/

Then you can use the instructions written for the Windows 7 driver install.
Here you can download the detailed step-by-step instructions how to install the driver: