Can't access JTAG chain

Your problem is probably related to the OS (Win 10 on the laptop). It could be because of "Driver Signature Enforcement" or some driver incompatibility with Win 10. Take a look at the two following links and see if they can help you find a solution:

https://forums.intel.com/s/question/0D50P00003yyKUPSA2/windows-10-driver-support-for-usb-blaster-?language=en_US

http://www.terasic.com.tw/wiki/Altera_USB_Blaster_Driver_Installation_Instructions

Hi, thanks for the replay. but it still didnt works.

i've treid to work according the two links but it still didnt works.

the driver is intalled in the device manager, all look good, but the error still exist.

the usb blaster is connected as you can see in the picture.

if i take tha same usb to other computer, its works.

do you have any idea?

look what i found, in the JTAG chain debugger.

in the conputer that work ->

in my laptop that dont work ->

hope it's help you to solve my problem.

Hi,

Can you try to re-install the USB Blaster driver from the drivers folder Intel Quartus Prime Standard edition v17.0/17.1 or Stand-alone Quartus Prime Programmer v17.0/17.1? You can refer to the following KDB link:

https://www.intel.com/content/altera-www/global/en_us/index/support/support-resources/knowledge-base/component/2017/update-driver-software---usb-blaster--windows-encountered-a-prob.html

You should be able to download the Stand-alone Quartus Prime Programmer from the following link:

http://fpgasoftware.intel.com/17.1/?edition=standard&platform=windows&download_manager=dlm3&product=qprogrammer#tabs-4

Regards,

Nooraini