Determine Whether 32 or 64 bit


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I installed Windows 7 Home Premium using the 64 bit installation disc on my computer which has an Intel Q9650 cpu and 8 Gb of DDR2 1066 RAM.

However - opening Control Panel > System the information shows that I have
8 GB RAM installed (3.25 usable)
32 bit operating system

How can that be - I definitely used the 64 bit Windows 7 installation disc (latest retail version).
 
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davehc

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There are some unoffical versions available with both on the same DVD. In this case, you may have put in the wrong key.
Otherwise, if you are using a genuine retail version, then,
1. You used the wrong DVD or,
2. The DVD's are incorrectly labelled.
 

clifford_cooley

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If you look under Computer Properties which version does it say you are using?

Control Panel >> System and Security >> System
"Windows Logo + Pause" will also take you there.

Look under System and then System Type
 
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davehc

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I think that is where he looked and found the "32Bit" version?
 

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