Bitcoin mining Computer

Hi everyone,I need a computer that can mine around 20 Bit coins a day.I also need it to have good cooling.I need a software Bit coin miner made and I want it already installed in the [login to view URL] the software I was thinking you pick what mining pool you want to mine in then you put your wallet address then you press mine and your computer starts to work faster.I need it to work 24/[login to view URL] make the computer that fast the speed will be TH/S. I am willing to pay 100$ and then pay the rest using the bitcoin computer machine because I am really low on money.