If you don't really use Windows Indexing Service (most people don't) and just want to stop it from utilizing your CPU resources, then you can safely turn it off following the steps below:
Go to the Start menu and select Control Panel.
Go to Add or Remove programs option.
Click the Add/Remove Windows Components option.
Uncheck the box next to Indexing Service and then click Next.
Click Finish. Windows Indexing Service is now disabled on your computer.
Reboot your computer.
Once you restart Windows, your computer should be fast again and Cisvc.exe should not be running any longer eating up your CPU resources. If you ever need to turn Windows indexing back on, just follow the steps above but check the Indexing Service option box.
If the problem persists, your computer might have been hacked by a keylogger or other undesirable software application.
Go to our recommended software page and download ESET NOD32. This should be able to detect and remove any keylogger that might be installed.
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