I have one J-link ARM programmer, SO for first time i start it via KEIL software, and KEIL updated it's Driver, So after driver Updated , it's made crazy!!! and the led of its got down , so when i have this error in KEIL :
Cannot read jlink version number
and via windows7 driver manager i got this error:
This device cannot start. (Code 10)
So what i must to do for reinstalling it's proper Driver and so on? Thanks a lot.