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You are too late for mining :/
Unless you are China
CPU -> GPU -> FPGA -> ASIC -> China

Maybe check into Bitcoin Gold or Bitcoin Silver?
https://steemit.com/bitcoin/@rdef/bitcoin-mining-in-october-2017-still-profitable
https://steemit.com/bitcoin/@rdef/bitcoin-mining-in-october-2017-still-profitable

Thanks for the link. I will look at it.

What type of bitcoin minning do you want to do running only PC? The new Bitcoin Gold Hard Fork?

Only in the PC

In most cases and most locations, mining does not provide a lucrative income amd you can often be happy to get out the hardware you invested. Don't underestimate the difficulty change that will occur.

Thus if you are not somehow technically addicted having some power machine at home that runs 24/7 ... better invest in the currency, you think it will grow. You more likely will get out more for your money.