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I need to install Java on my computer for my browser to be able to use Java video players. I had Java installed until now (i often run Java based stuff like eclipse or minecraft), but my browser (Firefox 17) keeps repeating i don't have Java.

I tried to uninstall it, but it failed with a message saying something about Windows Installer or Java being in use. I restarted my computer, closed everything i knew as using Java, and used "Revo uninstaller" to try to uninstall it, and it seemed to work, but when i try to reinstall it, the 64 bit version can be installed but the 32 bit version fails (the launcher just closes before the installation starts).

What can i do please ? (i'm using windows 7 64 bits)

Thanks for your help :)

EDIT : for some reason i can't post a comment, even after logging in, so i'll write it here : when i try to install the 32 bit version, the launcher just closes. I click on install, and then it simply closes without an error message.

share|improve this question
    
Firefox being in 32 bits, you need a 32 bit version of the JRE installed. –  assylias Jan 5 '13 at 23:14
    
I know, and as i said, the 32 bit installation fails. –  user184810 Jan 5 '13 at 23:14
    
Can you repeat the installation attempt and give us the exact error? –  K.A Jan 6 '13 at 0:06
    
Try using JavaRa to remove all versions, run something like CCleaner to mop up orphan registry entries, reboot and try installing once more. –  Karan Jan 6 '13 at 0:44

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