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Possible Duplicate:
installing Win 7 from Vista

I have a AMD Athlon 64 X2 Dual core processor on my computer with Vista Home Premium, but I believe it using a 32 bit Vista version(how can I find out what bit my system is really using?). Can I upgrade to Win 7 64 bit Home, if my present OS is using a 32 bit Vista OS.

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marked as duplicate by TheTXI Aug 19 '09 at 23:35

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Didn't you already ask this question? – Sasha Chedygov Aug 19 '09 at 22:53

You cannot upgrade a 32-bit OS to a 64-bit version; you have to do a clean install. Don't worry, though, all your old files will be moved to a new directory called Windows.old, so you won't lose anything, you'll just have to reinstall your applications.

To find out which version you have, go to Control Panel -> System and Maintenance -> System, and it should say either 32-bit or 64-bit Operating System.

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