You may need to temporarily disable "Driver Signature Enforcement" in Windows settings to install the older USB-Blaster drivers found in the /drivers folder of your installation directory.
To get a fully functional environment, ensure you download the following from the Intel Download Center Quartus II Software : The core compiler and IDE. Device Support : You must specifically download the files for your hardware (e.g., Cyclone II, Cyclone IV). ModelSim-Altera Starter Edition : For testing your HDL code. Altera Community Installation Quick Tips Single Directory : Place the installer and the device support files ( same folder altera quartus ii 13.0 free download
: Download the specific .qdz files for the chips you are using (e.g., Cyclone II, III, IV). You may need to temporarily disable "Driver Signature