The device turns off automatically after every quarter of an hour.

@mahmoudibr13858 could e a power issue or it could be a thermal issue as well as many other reasons. You are not telling us what OS you are using or what you are doing while it shuts down. I would start off and run the Event Viewer and review the error logs. See if that tells you more. If you are using Windows, do this to view your logs:

1. Press the Windows key + R to open the Run window
2. Type eventvwr and click OK
3. Expand the Windows Logs menu
4. Select the type of log you want to view, such as Application, Security, Setup, System, or Forwarded Events
5. Click on an event log to view the recorded events

Let us know what you find out.

Hi @mahmoudibr13858

If Win10 is installed, check that the auto shutdown timer hasn't been activated.

Here are two links that may help.

How to schedule automatic shutdown in Win10

How to cancel automatic shutdown in Win10