Thank you very much ^^
I have other question, my PC are reseting each 6 or 7 hours... and my graphic card stopped mining... where i can read some log about this? So i can knows why this happen and i will try fix that.
all logs go to ram. they are lost on reboot. this is so your usb key doesn't stop working in a few days.
you can set up a syslog server and send the log there if you'd like, but they are unlikely to contain anything of value anyway.
99.9% chance that you are overclocking too much, or you have inadequate cooling, or inadequate power, or your hardware is just faulty. run at stock and see if problems go away.