Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code39) - Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code39) Description You may observe this error message when installing the USB-Blaster driver from the Quartus® II software version 9.0 SP2 and earlier on Windows Vista 64-bit. To resolve this issue, upgrade the USB-Blaster driver to the version shipped with the Quartus II software version 9.1. This problem has been fixed beginning with the Quartus II software version 9.1. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']