Problem in installing Mozilla firefox?

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ok do this download advance uninstaller pro and then go to files and registry tool and then click on file shredder and then it will open look in program data see if it is still in there and then go to user look for your name of the computer click on it and then look in local and local low and roaming which are found in app data and then after selecting the files if they are any click next to shred them type yes and then try to download firefox if it still wont work please contact me at computerwizard36@yahoo.com also try this out comodo ice dragon its a better safe version of moziilla firefox and it will block tons of malware i found it to be way better then mozilla firefox its a firefox based browser good luck