How to Fix Amazon Firestick Keeps Restarting or Turning Off

Why Does Your Firestick Keep Restarting on Its Own?

You're in the middle of a movie, your favorite show, or an app — and suddenly the screen goes black and the Firestick reboots from scratch, sometimes multiple times in a row. This behavior is more common than most people realize, and it has very specific causes. The most frequent reason a Firestick keeps restarting spontaneously is an inadequate power supply: plugging into the TV's built-in USB port delivers insufficient current, causing voltage drops that force automatic reboots.

The good news is that most causes can be identified and fixed at home without professional help. In this complete guide, you'll learn how to diagnose the problem based on the specific symptom you're experiencing, and apply the right solution for each case — from swapping the power adapter to a factory reset as the last resort.

Diagnostic Table: Symptom → Cause → Fix

Fix 1 — Power Supply: The Most Common Culprit

This is, by far, the number one cause of spontaneous restarts. The Firestick requires 5V and at least 1A of current to operate stably. The USB ports built into modern televisions typically supply only 0.5A — half of what's needed. This power deficit doesn't kill the device immediately, but creates constant instability: the device keeps restarting especially when heavier apps (like 4K streaming services) demand more processing and, consequently, more power.

The solution is simple and definitive: always use the 5V/1A wall adapter that came in the Firestick box. If you lost or damaged that adapter, any smartphone charger with a 5V output and at least 1A will solve the problem — common phone chargers usually deliver 1A or more. If you have the Firestick 4K Max, which consumes more power, prefer an adapter with at least 1.5A.

DomineTec Tip: Amazon even printed a warning on the Firestick box telling users not to use the TV's USB port. Yet this remains the most common mistake users make. If you're currently using the TV's USB port, switch to a wall outlet today and see if the problem stops immediately.

Fix 2 — Overheating: When Your Firestick Runs Too Hot

The Firestick is a miniature computer with a quad-core processor that generates heat during use. When installed directly in the TV's HDMI port — especially on the back of modern televisions, where airflow is limited — heat builds up quickly and the processor activates a thermal protection mechanism that forces a restart to prevent permanent damage.

How to identify if overheating is the problem: the Firestick only restarts after prolonged periods of use (usually 30 minutes or more), and may even display a temperature warning message before restarting.

Solutions for overheating:

• Use the HDMI extender cable that comes in the Firestick box. It keeps the device away from the TV in a position with better airflow. If you don't have the cable, it's available separately at an affordable price.
• Don't place anything on top of the Firestick — it needs space around it to dissipate heat.
• Avoid leaving the TV in very hot environments, especially in unventilated rooms during summer.
• Take breaks if you notice the device is very hot to the touch — turn off the TV and let the Firestick rest for 15 minutes.

Fix 3 — Corrupted Apps and Full Cache

When the Firestick restarts when opening a specific app — for example, every time you try to open Netflix, Prime Video, or any other app — the problem is likely in that particular app, not the system as a whole. Here's how to fix it:

1. Go to Settings → Applications → Manage Installed Applications.
2. Find the problematic app in the list and click on it.
3. First, try Clear Cache and then restart the Firestick. If the problem persists, go back and click Clear Data (note: this will erase saved logins and preferences in the app).
4. If it still doesn't resolve, Uninstall the app completely and reinstall it from the Amazon store.

For full RAM problems — which cause random restarts without a clear pattern — the process is different:

1. Go to Settings → Applications → Manage Installed Applications.
2. Sort by size and uninstall apps you no longer use.
3. For each app you keep, clear the cache individually.
4. Restart the Firestick by holding the select button and play/pause button on the remote for 5 seconds — this forces a clean system restart.

If you're having trouble navigating settings or the remote is also acting up, check our guide on how to use Firestick without a remote control for alternative control methods.

Fix 4 — Firmware Updates and How to Check Error Logs

Sometimes the restart problem comes from a bug in Amazon's own firmware. This typically happens right after an automatic update that failed midway or introduced a specific bug. To check for an available update and force installation:

1. Go to Settings → My Fire TV → About.
2. Click Check for Updates. If a newer version is available, the download will start automatically.
3. Wait for installation and the system's automatic restart.

To check for error logs on the Firestick that might indicate the cause of the problem, you can use ADB (Android Debug Bridge) from your computer. The process is more technical, but it works:

1. Enable ADB Debugging in Settings → My Fire TV → Developer Options.
2. On your computer, install ADB (available on the official Android Developers website).
3. Connect via command: adb connect [FIRETV_IP]:5555 (the IP appears in Settings → My Fire TV → About → Network).
4. Run adb logcat -d > log.txt to export system logs to a text file.
5. Open the file and look for error messages ("ERROR", "FATAL", "ANR") near the time when restarts occurred.

DomineTec Tip: If you don't want to dive into ADB logs, there's a shortcut: install the free LogCat Reader app (available via Downloader) which shows errors in a more user-friendly interface directly on the TV screen.

Fix 5 — Factory Reset: The Last Resort

If none of the previous solutions resolved the problem, it's time to consider a factory reset. This procedure completely erases all installed apps, settings, and saved data on the device, returning it to its out-of-box state. You'll need to go through the initial setup again, including Amazon account login and app reinstallation.

There are two ways to perform a reset:

Through the menu (when the Firestick still works well enough to navigate):

1. Go to Settings → My Fire TV → Reset to Factory Defaults.
2. Confirm the action when prompted.
3. Wait for the process — it can take 5 to 15 minutes.

Via the remote (when the device can't complete the boot sequence):

1. With the Firestick stuck on the logo screen (stuck in a boot loop), simultaneously press and hold the Back button (curved arrow) and the Right directional button on the remote for 10 seconds.
2. A confirmation screen will appear asking if you want to reset. Select Continue.

To see more detailed troubleshooting for related issues and understand whether the 4K model is more reliable, check our article on whether the Fire TV Stick 4K is worth buying.

Checking for Hardware Failures in the Firestick Board

If your Firestick keeps restarting even after replacing the power adapter, the USB cable, and resetting the system software, the internal mainboard might have suffered thermal degradation. Streaming high-bitrate video generates significant heat inside the tiny stick housing. If the device was kept in a tight space behind the TV for years, the solder joints on the processor or Wi-Fi module can weaken over time. In this case, test the device on another television to see if the behavior persists before replacing it.

Allowing the device to cool down completely and using an HDMI male-to-female extender cable to keep the stick away from the hot television panel can also significantly improve airflow and prevent thermal reboots.

FAQ — Frequently Asked Questions About Firestick Restarting

My Firestick restarts every time I switch apps — what could it be?

Most likely it's insufficient available RAM. The Firestick, especially the Lite and basic Full HD models, has limited RAM (1 GB). When you have many apps running in the background, switching apps can exhaust memory and force a restart. Solution: clear the cache of all apps and uninstall the ones you don't use.

Can I use any USB charger with the Firestick?

Technically yes, as long as it provides 5V and at least 1A of current. Most modern smartphone chargers meet this requirement. Check the charger label — it usually says "Output: 5V 1A" or similar. Tablet chargers or fast chargers with 2A or more also work perfectly.

My Firestick restarts and gets stuck on the logo screen. What should I do?

First, try the hard reset via remote: press and hold the Back and Right buttons simultaneously for 10 seconds during the logo screen. If that doesn't work, unplug the Firestick from power for 60 seconds and reconnect. If the problem persists, contact Amazon support — devices under warranty may be replaced at no charge.

An automatic update caused the restart problem. What should I do?

In this case, the best option is to wait for the next automatic update, which normally fixes bugs introduced by the previous version. If the device can still navigate, go to Settings → My Fire TV → About → Check for Updates to force a search for newer versions. In extreme cases, a factory reset is the most reliable solution.

Conclusion: Restarting Has a Fix — Follow the Right Order

A Firestick that keeps restarting is frustrating, but it rarely means the device has a manufacturing defect. In more than 80% of reported user cases, switching the power supply (using the wall adapter instead of the TV's USB port) resolves the problem immediately. For the remaining cases, the correct diagnostic order is: power → temperature → apps → firmware → factory reset.

Following this logical sequence, you identify and fix the problem without unnecessarily losing data. The factory reset is always the last resort — not the first. With a little patience, your Firestick will be back to stable operation within minutes.