FLV has stopped working on my new windows 7 installation.It worked before.I have installed FLV2MPEG and realplayer but even though it downloads FLV's it won't recognize them.
First you need to un-install your previous installation. After this, you need to go filehippo.com and search vlc. Where you can find all version of VLC. Download which you thing better for your PC. Download it and install it. After installation. Try it. I hope it will work fine...
Another option to try is the FLV Player at FLV.com. They also have an awesome FLV converter that allows you to change video formats to be playable on an PC or even your phone.