If you have recently upgraded to win8 you will find that some of the USB drivers we use for machine communications will not install.
By default, windows 8 disables the installation of un-signed device drivers.
However, you can override this behaviour by altering advanced startup options like this:(You may want to close any open apps or documents first, as you will be closing the PC down)
Move mouse up into the Top/Bottom Right corner and pick Search:
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Then pick Settings, type Advanced… and you will the advanced options appear:
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From the PC settings screen, choose General then scroll down and pick Restart Now:
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Now pick Troubleshoot:
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Now Advanced Options:
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Now pick Start-up Settings
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Now hit the Restart button
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You can now choose to Disable driver signature enforcement by pressing the key 7 or F7
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That’s it, you will now be warned about installing unsigned drivers as you were in previous Windows versions instead of a complete failure to install.Low cost, High Quality Desktop 3D Printing...