is the led working on the miner? i had a similar experience, some times you need to reset the miner and restart your device

Yes, they are working.

You mean reset the miner by installing the driver again? I did that many times.

i mean reset your device, on which the miner run, you're using a computer right?

That's right. I'll do that and see what happens

After I restarted my PC, now the miner keep saiynd that it's DEAD. It mine a little, and then I can hear a bit and it says that it is DEAD.