> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.e2language.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I use the system checker?

If you're experiencing issues using the platform or completing the Mini Mock Test, please navigate to the **Help** option on the left-hand side menu of your dashboard and click on **System Checker**.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/rtaimage_1uxd057.jpeg)
You might see a pop-up asking permission to use the microphone. Please select Allow. (If you don't see this pop-up, please ensure your pop-up blocker is disabled.)

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/rtaimage-1_mtamy4.jpeg)
Firstly, you'll test your video. Press the play button. If you are able to watch, please press **Yes**. If you cannot watch it, press **No** and click on the link provided to troubleshoot.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/rtaimage_ci0ywc.png)
Next, you'll test your audio. Ensure the volume on your device is on and turned up and press the play button. If you can hear it, press Yes. If not, press No and get in touch with us.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/rtaimage-1_gv76rf.png)
At the bottom of the page, you'll find a list of information about your operating system and browser. Please screenshot this and attach it to any technical inquiries you send to us. This will help us to resolve the issue quickly.

If videos still do not play, use Google Chrome on a desktop computer or laptop, clear your browser's cookies and cache, and allow pop-ups from E2. You can also run a connection test at [Speed Test](https://www.speedtest.net/) and save a screenshot of the results. Include a screenshot or screen recording of the affected question or section when reporting the issue.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/system_1hfywgj.png)


2. A screenshot of your [Speed Test](https://www.speedtest.net/) results.
3. A short video showing the issue, if possible—for example, what happens when you drag and drop an answer.

![](https://storage.crisp.chat/users/helpdesk/website/-/e/6/a/b/e6ab70b4f3267800/system_1hfywgj.png)