I'm sorry to open a new thread on this topic but all the other similar threads have not helped me solve my issue.
I have Windows 7 64bit on my desktop. Until recently I have Studio 5 and everything worked fine. I uninstalled Studio 5 completely and installed Studio 6.1.
Now, I am unable to get my AVRISP mkII to work.
In the device manager I confirm that I have Jungo and below it, both AVRISP mkII and WinDriver. But, both have little yellow warning triangles and complain that the Windows can not confirm the device signature... Is this normal?
From Studio 6.1, I can do View -> Available Atmel Tools and see the AVRISP mkII listed. I can also do Tools -> Device programming and select the AVRISP from the tool dropdown.
If I try to do apply, or if I try to upgrade the tool from the other dialog, I get:
02:58:34: [ERROR] USB driver initialization failed: Internal system error (0x20000007)., ModuleName: TCF (TCF command: Tool:connect failed.)
I have reinstalled the drivers, I have re-run the Studio 6.1 installation in maint mode, all to no effect. I have tried different USB ports on my machine, no joy.
I had FTDI VCP drivers installed. I uninstalled them, rebooted the entire machine, still no joy.
I have two programmers here (both AVRISP mkII) and I get exactly the same results with both.
So after this, I am resorting to this plea for help. I apologize if there is a thread that answers this issue, but if so I could not find it.
Thanks very much...