CIS take to much CPU

first, sorry for my english.

computer details:
8G Ram
Windows 8.1

what can i do? (this is now computer)

Hi and welcome Hyperlost,
Was there previously any security software installed?
If yes, please try the corresponding clean-up/removal tool if it is listed in the link below.
Uninstallers (removal tools) for common antivirus software


Im just closed the process and the problam solve.
thank you and sorry for silly question. :-TU

Can you check the Tasks logs to see if at that moment the cache builder/cache cleaner process was running? That will take up quite a few CPU cycles and will not throtle back when the system is no longer idle.