PVZ GARDEN WARFARE ON A 32 BIT??

It's not the computer these days.  Intel's CPUs entered the 21st century in 2006, about five years after AMD released their first 64 bit CPU.  Your problem is almost certainly your version of Windows is out of date (all from Vista onward had the 64 bit option.  The WinXP version in 64 bit arrived late in the OS version's lifetime, and added a batch of new bugs with its release).  

I have 7

No PvZ needs to run on a 64 bit OS.  No work around currently exists nor has there been any mention of it coming from the devs that I'm aware of.

You need Windows 7 64bit, 32bit won't work.  Depending on your license for Windows, many of them are valid for both 32 and 64 of the same edition (i.e. home, pro, enterprise, ultimate).  Generally retail copies you can use either 32 or 64 but pre-installed from the computer maker you cannot, not written in stone as I'm sure there are many examples to the contrary.

Windows ISO's are freely available from Microsoft.  They come with a 30 day trial before you need to license it.

Gorath is right about CPUs; Intel didn't use x84-64 until late into the Pentium4 generation.  Itanium (IA64) was Intel's original 64bit CPUs which do still exist but probably sell in the order of dozens for enterprise solutions, it was a failure of an architecture in short.

 I think, you could just update your OS to a 64 bit version. Would be cheaper than a new pc. BUT you really need to make sure the other hardware meets or exceeds min. system requirments first. This game not only requires a good processor but a great video card aswell. Had to drop $200.00 on a ATI R7 260X to go with my I5 processor. 

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@anw1234 wrote:

I have 7

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@GENERAL_ANW 

Back at the time Windows 7 was being produced, you had to choose between 32 bit and 64 bit for the "Home Starter" versions.  The "Home Premium" was sold for a higher price, and included both (that's what I personally bought at the time).  Amazon still has some of the upgrades from the Starter pack of Win 7 to Home Premium, which (although they don't say so) should include both 32-bit and 64-bit versions, $36, if your machine can handle both: 

http://www.amazon.com/Microsoft-Windows-Anytime-Upgrade-Starter/dp/B002K7C1HG/ref=sr_1_4?s=software&ie=UTF8&qid=1408276143&sr=1-4&keywords=windows+7+upgrade+from+xp

Here are the full hardware requirements of Windows 7: 

http://windows.microsoft.com/en-us/windows7/products/system-requirements

Is there any real reason why it couldn't have be produced for a 32-bit processor ?  Are the 3D calculations so complex that only a 64-bit processor will do ?

After all, we all remember Microsoft's Halo 2 fiasco...

The game engine is for the latest game consoles, which finally are up to current standards, and 32 bit is not "current" at all, that's pre-2009, five years out of date now.   And no, I could care less about any HALO game -- not my kind of game at all. 

Your processor is 64bit... unless it's a dinosaur belching fire.

64bit OS + virtually any modern cpu + a mid-range or higher GPU from last 4 or 5 years

I'll save up for a new cpu.  I'm 15 and I'll prob get a used 7 64 bit 4 or 8 GB ram off eBay.  Or Chrstmas.

Your hardware is 64bit already.  Most likely anyways...

The Operating System (windows) is the incorrect version.  Software.

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You will want to purchase a Gaming computer.  If you do you want to look at GPU's models the most when choosing one.  The bigger GPU the better gameing machine it is in most all cases.

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You should list what your system specs are here.

System Specs :

Start -> type: DXDiag -> Save Information  www.pastebin.com

More detailed description = http://answers.ea.com/t5/Titanfall/PC-Graphic-performance-issues-in-Titanfall-here-s-how-to-help-us/m-p/2454360#U2454360

Alternative to DXdiag method (not as detailed):

Download Speccy Portable

https://www.piriform.com/speccy/builds

Open Speccy32.exe  ->  CPU, RAM and Graphics / GPU + Driver Version / Date