Hardware not detected

[Altera_Forum]

Hello, 

 I am not able to program my altera fpga design board. I was able to do it earlier and I had tested many of my designs. However, very recently the board is not detected.  The board was detected and programmable in my colleagues computer. So I assume it's a driver issue.   However, the USB blaster driver cannot be removed nor updated in my computer due to some weird reason. The program never responds when such an action is performed. I even tried to download a new programmer from Altera and even restarted the computer, power-cycled the board but still the problem persists.  I have many versions of Altera Quartus2 installed in my computer, and hence I cannot remove all of them.   Can any one suggest a solution.   Thank you.

[Altera_Forum]

Hi, 

 You mention that you have several versions of Quartus II installed, maybe you've run into the issue described here: http://www.altera.com/support/kdb/solutions/rd03062012_414.html  /J

[Altera_Forum]

--- Quote Start ---  Hi,  You mention that you have several versions of Quartus II installed, maybe you've run into the issue described here: http://www.altera.com/support/kdb/solutions/rd03062012_414.html  /J  --- Quote End ---     The issue was fixed by removing altera programmer and signal tap installed separately and restarting the workstation. Thank you for the support.