---
title: "H2testw (Windows)"
{% include toc title="Table of Contents" %}
### Leitura Obrigatória
This is an add-on section for checking your SD card for errors using h2testw.
Dependendo do tamanho do teu cartão SD e da velocidade do teu computador, este processo pode levar horas!
Esta página é só para utilizadores de Windows. If you are not on windows, check out the [F3 (Linux)](f3-(linux)) or [F3XSwift (Mac)](f3xswift-(mac)) pages.
### What You Need
* The latest version of [h2testw](https://www.heise.de/ct/Redaktion/bo/downloads/h2testw_1.4.zip)
### Instructions
1. Copy `h2testw.exe` from the h2testw `.zip` to your desktop
1. Insert your SD card into your computer
1. Run `h2testw.exe`
1. Select "English"
1. Click "Select target"
1. Select your SD card's drive letter
1. Ensure "all available space" is selected
1. Click "Write + Verify"
1. Wait until the process is completed
___
If the test shows the result `Test finished without errors`, your SD card is good and you can delete all `.h2w` files on your SD card.
{: .notice--success}
If the test shows any other results, your SD card may be corrupted or damaged and you may have to replace it!
{: .notice--danger}
### Return to [Get Started](get-started)
{: .notice--primary}
