Help needed for removal of 'v9' browser malware. unable to remove it

I am not an expert with pc's. I recently downloaded some free software and  have inherited some unwanted 'V9 Malware' which has taken over as my browser in the place of Internet explorer and I am also receiving lots of unwanted advertisements with this malware. I would like to have Internet explorer back as my default browser. I have tried re-setting my p.c to its original settings with no effect. Can anyone help me to remove this irritating 'V9 Malware'.

 

Any useful suggestions would be much appreciated.

 

User: 73plants