mhm lets see what i can do to help you:
at first svhost/svchost is nothing bad, dont worry about it.
if you cant to find out about a specific process, you can simply google that.
cmd.exe shouldnt be running at startup, you can cancel it.
tl;dr thats what i do if i were you:
go start->run->type "msconfig" and press enter.
then you see a window with a few tabs. the tabs "startup" and "services" are important here:
go to the startup tab and uncheck all boxes.(that means no extra processes will run when the computer starts)
then go to services
and first check the box "hide all windows services"
screen for help:
then uncheck all boxes that are left.
after that go to start>all programs>autostart(its a folder) and delete everything thats inside it
then restart your pc and look if anything changed.
if not/yes go to msconfig again and turn on the processes in startup which you know you can trust(like your av)
i hope it helps