It will be the same answer as I gave another user a few posts ago. CPU mining with your parameters works great on my system.
It might be that your CPU doesn't support the instruction set by the default exe-file "cpuminer-core-avx2.exe". See this page for alternative exe-files for Cpuminer that may work on your system:
http://www.awesomeminer.com/help/cpumining.aspxThis helped so now CPU mining works ok with alt exe file. Many thanks you've been great support.