hi ,guys i want to know how to use usbasp with atmel studio 6 to burn the arduino boot loader because i have i problem with arduino as isp .
Have you tried Nick Gammon's bootloader sketch? Much simpler.
I don't know if Studio 6 supports anything besides Atmel AVR ISP MKii. It may. I stopped Atmel Studio using it because it took waaaaaaay too long to start up.
I didn't try reloading it when I got a new computer.