it can be for multiple things, like the software for mining, the usb as you said the pc/raspberry you are using, or defective unit
check first your command line(bat file or desktop shortcut), maybe it's not mining correctly
proceed with exclusion, it's the best method to find the problems
check first your command line(bat file or desktop shortcut), maybe it's not mining correctly
proceed with exclusion, it's the best method to find the problems
Ok, but what am I looking for?
As I said I'm very new to all this and it is a bit confusing. I thought it would be easier
first thing are you using the correct miner cgminer 4.9.0? command line should be like this cgminer.exe -o http://127.0.0.1:8332 -u fred -p password --au3-freq 225 --au3-volt 800 --btc-address