FRST is...a tool designed for dealing with malware and is only used here at BC in the Malware Removal Logs Forum.
, you will see that it is listed as a Security tool, one of the tools used to deal with malware situations.
If you have no malware situation...I suggest that you try to use an appropriate tool for system or O/S issues.
If you have a malware situation...I suggest that you follow the steps at Preparation Guide, Before Using Malware Removal Tools and Requesting Help - http://www.bleepingcomputer.com/forums/topic34773.html
and post the requested logs in the forum where the Prep Guide exists.