you can run adwcleaner
here are some flagrantly coppied instructions
can you find the mbam log, if so post it along with the adwcleaner log

run AdwCleaner;

Click on the [Delete] Wait for the programme completes his work.
The program will close all active programs. Click OK to confirm that.
On the next two windows that open ( Informations and Restart required ) click OK
The computer will restart and open a notepad ( C:\AdwCleaner[S1].txt ) with the report.
Save the notepad report on the Desktop
Please attach here C:\AdwCleaner[S1].txt 

if your really think you have a rootkit there are Sophus and MBAM rootkit
but get rid of the noise first