Fire fox wont install.

Im new to all this, so really need as simle answer as possible
Im running windows vista home premium, 32 bit. have avira, malware bytes.
I havnt been able to load fire fox in since yesterday morning, i tried ctrl/alt/delets, then end process.
Also tried a system restore 3 times, none of which solved the problem.
Then i tried a full restore, and started from scrath, ran super anti spyware on safe mode, it detected 47 tracking cookies, i quarinteened and removed them, then restarted it in normal mode, tried to install firefox again, i got to the set up wizard, then the computer re started, but the setup wizard didnt continue, really need help on this, as just getting to terms with firefox, ive just installed chrome, its faster, but dont know how to personalise, is it better than fire fox, as fire fox had some great add on.
I dont know how to install add ons, or even expand my tool bar.

 

Did you stop Avira while installing? An anti-virus can bork up any software install. Take it offline and try this way, download FireFox(FF) and install from hard drive. I'm not sure what your issue is, just a couple of things to try.

 

Could you open FF in safe mode? Might have been some weird add-on.

Also, try an older version of FF, maybe one of the updates doesn't like it.

 

Thanks for the replies, ive tried everything suggested apart from an older version of firefox.
Ive also heard that some new windows updates knock firefox out.
When a complete system resrore was done yesterday, the new updates will of been in the set up process, maye wiping some updates might solve the problem.

 

Vista is most like blocking FireFox.

 

Thanks again, ive re installing fire fox, but 3.1 beta and its working fine.