# Launching Matlab 32bit on a Windows 7 machine

**URL:** <https://psychtoolbox.discourse.group/t/launching-matlab-32bit-on-a-windows-7-machine/515>\
**Category:** Uncategorized\
**Created:** [March 28, 2011, 12:50pm UTC](https://psychtoolbox.discourse.group/t/launching-matlab-32bit-on-a-windows-7-machine/515 "2011-03-28T12:50:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [March 28, 2011, 12:50pm UTC](https://psychtoolbox.discourse.group/t/launching-matlab-32bit-on-a-windows-7-machine/515/1 "2011-03-28T12:50:26Z")

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I am trying to use the Psychtoolbox with Matlab 64 bit on a Windows 7 machine. I have tried using the run command "matlab -win32" to run Matlab in 32 bit mode but instead it still runs in 64 bit mode. Has anyone got any suggestions?  
  
Thank you very much,  
Louise

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**Author:** ![dcnieho](https://avatars.discourse-cdn.com/v4/letter/d/779978/32.png) [@dcnieho](https://psychtoolbox.discourse.group/u/dcnieho)\
**Post date:** [March 29, 2011, 12:35am UTC](https://psychtoolbox.discourse.group/t/launching-matlab-32bit-on-a-windows-7-machine/515/2 "2011-03-29T00:35:01Z")

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Hi Louise,

 

We've explained this on the wiki (I believe we did).

 

Quick summary: you'll have to install the 32bit version separately. On your dvd, in the bin folder IIRC, there is a win32 and a win64 folder. Go into the win32 folder and run setup. You can have the 32bit and 64bit versions installed next to each other (though in different folders of course!!)

 

Best,

Dee  
  

> On Mon, Mar 28, 2011 at 20:50, louise.marshall9 \<[louise.marshall9@...](mailto:louise.marshall9@...)\> wrote:  
> 
> > I am trying to use the Psychtoolbox with Matlab 64 bit on a Windows 7 machine. I have tried using the run command "matlab -win32" to run Matlab in 32 bit mode but instead it still runs in 64 bit mode. Has anyone got any suggestions?  
> >   
> > Thank you very much,  
> > Louise