Firefox hangs

[arian29]

Firefox hangs and freezes the moment i start it. I have reinstalled it but still it freezes. I removed the antivirus (avira) and firewall (comodo) but no change. Can't even enter safe mode it hangs.

Screenshots:
and

os win7 x64, amd fx 8350m 8gb ram, firefox version 20

Please help..

 

[harshilsharma63]

100 MB of memory usage sounds suspicious. try uninstalling it with Revo Uninstaller.

 

[thetechfreak]

Seeing the screenshots I think it's a virus. Do a scan using a updated AV(avira or avast) in same mode.
Or try a scan using this *housecall.trendmicro.com