This manual should help you to successfully install **Psychtoolbox** in your Matlab. This instructions are created mainly for Windows, but you can find details on installing Psychtoolbox also for other OS, please follow this [website](http://psychtoolbox.org/download.html)
*Installation successfully conducted on Windows machine, 64-bit with Matlab version R2020b, license label Matlab(Individual)*
## Steps
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- Download and install **GStreamer** [here](https://gstreamer.freedesktop.org/download/). Download the **MSVC** version, not MinGW. If there are some problems with the installation, check this [website](http://psychtoolbox.org/docs/GStreamer)
- You'll also need to download **Microsoft Runtime Libraries for MSVC 2015-2019** (you can find the link in section for windows installation in point 4., [here](http://psychtoolbox.org/download.html))
- Importantly, download the Psychtoolbox installer, also the official website, in section for windows installation, point 2., [here](http://psychtoolbox.org/download.html). They advice to download it to your desktop, but I didn't and perhaps it's not so essential.
- Importantly, download the **Psychtoolbox installer**, also the official website, in section for windows installation, point 2., [here](http://psychtoolbox.org/download.html). They advice to download it to your desktop, but I didn't and it works fine. Maybe it's not essential.
5. Go back to your Matlab, it should be still opened as administrator.
6. enter following:
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>>DownloadPsychtoolbox('C:\toolbox')
```
It's possible that at this point it already runs fine, it will just take a bit of time. If yes, then you just need to close and open Matlab again and verify if you have it installed by `PsychtoolboxVersion` command.
It's possible that at this point it's already installing, it will just take a bit of time. If yes, then you just need to close and open Matlab again and verify if you have it installed by `PsychtoolboxVersion` command.
I have been asked if I want to delete the downloaded version, you can try to delete it first and if it's not working, you can choose not to. In that case you will be installing *beta* version. For me it works ok on the beta version.
During the installation, I have been asked if I want to delete the downloaded version, you can try to delete it first and if it's not working, you can choose not to. In that case you will be installing *beta* version. For me it works ok on the beta version.
In case you manage to download and install psychtoolbox, I suggest you to try running a basic demo from this [website](https://peterscarfe.com/totallyminimaldemo.html). I copied it below as well. In case you will have some synchronisation problems, just add at the beginning `Screen('Preference', 'SkipSyncTests', 1);`, otherwise copy this version. This should display a gray screen, that's it.
In case you manage to download and install psychtoolbox, I suggest you to try running a basic demo from this [website](https://peterscarfe.com/totallyminimaldemo.html). I copied it below as well. In case you will have some synchronisation problems, just add at the beginning of the script this command `Screen('Preference', 'SkipSyncTests', 1);`, otherwise copy this version. This short demo should display a grey screen, that's it. So if you are looking at grey screen, you are fine:)
