Just because a system comes with a 64-bit processor does not mean it was
installed with 64-bit Vista. In fact, unless you specifically request it,
most come preinstalled with the 32-bit version. If you open System
properties by hitting the Winkey+Pause/Break or from the Control Panel, the
System Type line will show whether it's 64-bit or not.
If it is truely x64, then you will need to contact the system manufacturer
to obtain appropriate installation disks for x86 (32-bit) Vista.
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com
"atle" <firstname.lastname@example.org> wrote in message
>I have just bought a new computer with vista installed and I am now running
> 64bit vista, and I am wondering if it is possible to change to 32bit, if
> how? i do not have any discs as all software was preinstalled, only a
> setup when first time i started my computer.