Windows 7 - During install, when can you choose 32-bit over 64-bit?

I'm upgrading my wife's laptop to Windows 7 and I didn't realize that her system automatically upgraded to the 64-bit version. First off, as my wife's system is about 3 years old, I didn't even think it would be able to install the 64-bit OS, but since it did, I assume that it's capable.

Anyway, because the system is relatively old and because there are added complexities to running an x64 OS over the 32-bit, I'd much rather my wife use the 32-bit OS. When does this option come up? I did a fresh install and i don't recall it asking me to choose.

I personally have the x64 running on my own rig, but just think it might be easier to stick with 32-bit for my wife. Should I just stick with the x64? Where's the option to choose if I decide to reinstall?

Also, just for clarification: Windows 7 x64 wouldn't have installed unless the system was capable, right? I'm sorry if it's a stupid question, but I really didn't think her laptop could support the x64 OS.

Thanks in advance.

You must insert the 32 bit DVD and not the 64. The choice is made at the beginning with the DVD.

I made my DVD from the install files, but I was under the impression that the install disk would let me choose.

Well, now that it looks like i've only got the x64 disc, could you also address my other (admittedly ignorant) question: The fact that the system has installed the x64 OS suggests that the hardware supports it, right? If the hardware didn't, would it have given a message saying the OS is incompatible with the hardware?

. If you ever have the same situation there is a free test from microsoft, upgrade advisor, that will give you the official answer.

The system does not usually warn you of problems.

Post your Wifes system specs and we can tell you if you can expect problems.

Appart from the added usage of RAM with x64, I haven't noticed any complexities over 32bit with the usual day to day programs. I guess that depending on the laptop's specs that the 64bit install could stay, but choice is yours, do what feels right .

Here are some specs:

Dell Laptop
Processor: Intel Core 2 T5500 @ 1.66Ghz
Ram: 2 GB

Ok, it should run. Use it for a while. If you have problems, you may be able to get install files for a new DVD, for a small charge. The cost when you buy is for the Key, not the DVD.

I think that you will be ok, but will not have the benefits of 64 bit and maybe not some of the benefits of Windows 7.

Bottom line use it. If you are satisfied with the performance, there is not harm to the computer.

Cool, I'll give it a try. Many thanks.

It depends on how the performance is over time on your hardware. If you decide you want to change to 32 bit (as I have done before) then you'll need to find a 32 bit installer in your version.

Any installer will work if you unlock all versions by deleting the ei.cfg file in Sources folder, then recompile back into an ISO to burn to DVD: Bootable ISO - Create from Installation Files

You are entitled to either 32 or 64 bit with each license; you can change at any time.

It is still possible for windows 7 64 bit to be slower because the operating system loads more ram at the system startup, but the disk performance should be faster..
64 bit is also more secure so I would suggest 64 bit as your option