Delete all system restore points
Reset firefox to default, there is no need to uninstall and reinstall
Reset by doing the following.
Click on Help>Troubleshooting Information>Click on Reset Firefox
Go to C:\users\<profile name>\appdata\roaming and delete anything that looks like FLV player
Go to C:\users\<profile name>\appdata\local\temp and delete everything in here.
Run combofix again
This is what i have in my roaming directory, yours should be similar
22/01/2014 12:11 AM <DIR> Adobe
06/12/2013 08:37 PM <DIR> ArcSoft
07/02/2014 01:08 PM <DIR> Audacity
12/01/2014 04:03 PM <DIR> avidemux
08/02/2014 10:07 AM <DIR> BitTorrent
28/11/2013 01:32 AM <DIR> Bullzip
05/02/2014 06:18 PM <DIR> Dropbox
06/02/2014 10:39 PM <DIR> Free Download Manager
04/11/2013 12:14 AM <DIR> Identities
04/11/2013 12:33 AM <DIR> InstallShield
04/11/2013 01:16 AM <DIR> Macromedia
21/11/2010 06:16 PM <DIR> Media Center Programs
04/11/2013 07:39 PM <DIR> Mozilla
26/12/2013 10:20 PM <DIR> NVIDIA
23/01/2014 09:34 PM <DIR> vlc
If anything has the name of the malware remove it