Security camera technician helping fix CCTV reboot issues

Steve H.

Reviewed for technical accuracy

Specialities: Security cameras & CCTV, PoE IP cameras, Wi-Fi cameras, NVR/DVR systems, power & cabling faults, remote viewing apps

Security camera keeps restarting every few minutes — power, PoE, Wi-Fi and firmware issues

Technician avatar Technician
Hey! We’ll track down why your security camera keeps restarting and stop the constant reboot loop. A few quick details so we don’t guess:
• Brand/model of the security camera or system (Ring, Arlo, Reolink, Swann, Lorex, Hikvision, Dahua, Wyze, generic IP camera, etc.)?
• Is it a Wi-Fi security camera, a PoE IP camera plugged into an NVR/switch, or an older analog CCTV camera on a DVR?
• How is it powered — wall power adapter, PoE, USB, battery/solar, or via an extension cord outside?
• What do you see when the camera keeps rebooting: logo on screen then black, live view for a few seconds then “restarting”, NVR beeps, or the app shows “reconnecting” over and over?
The more specific we are, the easier it is to fix a security camera stuck in a reboot loop instead of just power-cycling it endlessly.
Customer
I have three outdoor Wi-Fi security cameras wired to power (no batteries). They’ve been fine for a year, but recently they keep restarting every few minutes. In the app I see the live feed for 10–20 seconds, then it freezes, the IR LEDs click, and the camera reboots. Sometimes the NVR shows them as “Camera restarting” or “Reconnecting”. It happens more at night when the IR lights are on.
Technician avatar Technician
Got it — that really sounds like a classic security camera power or firmware issue causing a reboot loop.
When a security camera keeps restarting by itself, it’s almost always one of these:
• Unstable power supply — under-rated adapter, long or damaged extension cable, water in a junction box, or an overloaded PoE switch. When IR LEDs or the heater kick on, the camera briefly loses voltage and reboots.
• Short or partial short on the cable — crushed cable, moisture in connectors, poor crimp on RJ45 for PoE cameras can cause the IP camera to restart randomly.
• Corrupted firmware or SD card — the camera crashes when it tries to record or connect to the NVR/cloud and then restarts.
• Overheating — especially if the camera is in direct sun or in a sealed housing, it can shut down and restart to protect itself.

We’ll:
1) Rule out flaky power and cabling — the #1 cause of a CCTV camera that keeps rebooting.
2) Check the NVR/recorder and network load.
3) Look at SD card/HDD and camera firmware updates if needed.
Once we know which of those is triggering the restart, we can stop the camera from constantly power-cycling.
Customer
They’re Reolink-style Wi-Fi cams but wired to power. Two are outside on a long extension cord from the garage. I keep seeing “Device restarting, please wait” in the app. I tried rebooting the router and NVR but the cameras still keep restarting. One of them is mounted under an eave but gets a lot of weather.
Technician avatar Technician
Perfect, that helps. Let’s start with the basics that fix most cases where a security camera keeps turning off and on.
Step 1 — Test power without the extension cord
1) Take one of the cameras that keeps rebooting and bring it indoors.
2) Plug it directly into a known-good wall outlet using the original power adapter — no extension cord, no multi-plug, no smart plug.
3) Leave it powered on for at least 20–30 minutes while watching the live view in the app.
  • If it stays solid, we know the camera itself is probably fine and the problem is the power run or extension outside.
  • If it still reboots in a clean indoor outlet, it’s likely a camera firmware or hardware issue.

Step 2 — Check adapter specs and load
• Look at the label on the power adapter: it should match the camera’s rated voltage (usually 5V, 9V or 12V) and meet or exceed the recommended amps.
• Cheap or under-rated power adapters often cause IP cameras to restart randomly, especially at night with IR on.
Do this test with just one camera first — if we can get one stable, it tells us a lot about why your security camera system keeps rebooting.
Customer
I tried that with one camera. Indoors on a short cable it didn’t reboot for half an hour. When I plug it back into the long outdoor extension, it starts power cycling again after a few minutes. The adapter says 12V 1A. That extension also runs a small light.
Technician avatar Technician
That’s a smoking gun: the camera keeps restarting because of the power run, not the camera itself.
Step 3 — Fix the outdoor power issue
• Long, thin extension cords drop voltage, especially if they’re also powering a light. When IR or heater turns on, the camera briefly dips below 12V and reboots.
• Outdoors, connectors can get damp or corroded. A tiny short in a plug or junction box will make a security camera shut off and restart repeatedly.

Try this:
1) Use a shorter, heavier-gauge outdoor-rated extension or, ideally, a permanent outlet closer to the camera.
2) Don’t share that run with other high-draw devices (heaters, big lights, tools).
3) If the brand allows, upgrade to a slightly higher-amp adapter (for example, 12V 2A instead of 1A) while keeping the same voltage and correct polarity.

If you were using PoE instead of a plug-in adapter, the equivalent would be checking the PoE switch or NVR power budget and trying another port or cable — damaged Cat5/6 is another big reason PoE cameras keep rebooting.
Customer
I also have one wired PoE camera on the same system that keeps rebooting. The NVR log shows “IP Camera disconnected” then “IP Camera starting” over and over on that channel. The other PoE cameras are fine, so I wasn’t sure if it’s the cable or the port.
Technician avatar Technician
Good callout. When a PoE security camera keeps restarting on an NVR, we treat the cable and port like a power line and network in one.
Step 4 — Isolate the PoE reboot issue
• Swap the camera to a different PoE port on the NVR or PoE switch using the same cable.
  • If the rebooting follows the camera to the new port → likely camera or cable.
  • If the rebooting stays with the port → that PoE port may be weak or failing.

• Next, try a short test patch cable from the camera to the NVR/switch as close as possible.
  • If it stops rebooting on a short cable, the long in-wall run is probably damaged, too long, or picking up interference.

• Check if that PoE channel is near the total PoE power budget. Overloaded PoE (too many high-draw cameras on one switch) can cause one or two cameras to keep rebooting when night vision turns on.

This kind of testing usually reveals whether an IP camera reboot loop is caused by a rough cable run or a flaky PoE port.
Customer
Got it. One more thing: I have an indoor Wi-Fi camera (different brand) that doesn’t lose power but still restarts randomly. The app shows “reconnecting to Wi-Fi” a lot and sometimes it says “camera rebooting to apply changes” even when I didn’t change anything.
Technician avatar Technician
Great you mentioned that — for Wi-Fi security cameras that keep restarting, the pattern is a bit different.
Things to check:
• Make sure the camera is on 2.4 GHz Wi-Fi if it doesn’t support 5 GHz. If the router is aggressively band-steering, the stream can drop repeatedly and some cameras reboot when they keep losing the cloud connection.
• Move the router or camera so the Wi-Fi signal is strong (-60 dBm or better). A borderline signal can cause “reconnecting” loops and surprise reboots.
• In the camera app, check if there is a scheduled reboot feature; some brands default to rebooting every night to clear memory.

Step 5 — Update firmware and app cleanly
1) With the camera on solid power and good Wi-Fi, check for camera firmware updates in the app and install them once, letting the camera complete the reboot.
2) Update the mobile app from the official app store.
3) After updating, power-cycle the camera one last time from the app or by unplugging it for 30 seconds.

Buggy firmware is a common reason a security camera keeps restarting after an update, so getting onto a stable version often fixes weird phantom reboots.
Customer
Is there anything I can do so I don’t have to chase this each time? I don’t want my security cameras and NVR restarting every time the weather changes or there’s a small power fluctuation.
Technician avatar Technician
100% — we can “hard-en” the system so your security cameras stop randomly restarting.
Preventive setup for CCTV and IP cameras
• Use the original branded power adapters or properly-sized PoE switches/NVRs and avoid daisy-chaining cheap extension cords.
• Keep all outdoor connections in weatherproof boxes; seal joints so moisture can’t get into power or Ethernet connectors.
• For PoE, stay within recommended cable length (ideally under 100 m/328 ft) and avoid sharp bends or staples through the jacket.
• Give the NVR/DVR and cameras a small UPS/surge protector so little brown-outs don’t make everything reboot repeatedly.
• Check NVR hard-drive health once in a while — a failing HDD can make the NVR keep restarting and drop all cameras.
• Leave auto-updates on for security, but avoid applying big firmware updates to every camera at once. Update one, test, then roll out to others.
These steps dramatically cut down on “my security camera keeps restarting and going offline” problems over time.
Customer
What if a camera gets stuck in a boot loop and never actually comes online? I had one old camera where the logo kept showing, then it restarted again and again, and the app never connected.
Technician avatar Technician
That’s the more extreme version of a security camera stuck restarting, but there are still a few things to try:
• If it has a microSD card, power it off, remove the card, then power back on. A corrupted card can crash the camera during boot.
• Do a full factory reset using the manufacturer’s exact process (usually holding a reset button 10–20 seconds while powering on until you hear a chime or see an LED change).
• After resetting, add the camera again in the app or NVR as if it’s new and leave it for several minutes to finish any automatic firmware repair/update.
• Some brands provide a way to reflash firmware from a file or TFTP tool if the camera is in a boot loop — that’s a bit advanced but can save a camera that would otherwise be scrap.
If it still reboots continuously even on a clean power source with no SD card, it’s usually a hardware fault. At that point, replacing that one camera is often cheaper than fighting it — we can sanity-check the model and warranty for you in live chat.
Customer
After moving the outdoor cameras to a shorter outdoor cable and using a stronger 12V adapter, they haven’t restarted all day. The PoE camera was fixed by swapping the cable to a new run. No more reboot loop and the security cameras stay online. Thanks!
Technician avatar Technician
Summary: when a security camera keeps restarting, start by stabilising power (adapter, PoE, cabling and outlets), then test with a short, known-good run. Next, check NVR/DVR or SD card, update firmware on a solid connection, and factory-reset any camera stuck in a boot loop. Most “camera keeps rebooting” problems end up being power or cabling, not the camera itself. Not sure which part of your system is the culprit? Open the chat and an expert will walk through it step by step with your exact camera model.

Quick answer: the accepted fix

Accepted fix when a security camera keeps restarting: test the camera on a short, dedicated power run or PoE port to rule out low voltage and bad cabling, then replace weak adapters, damaged extensions or suspect Ethernet runs. Check NVR/DVR hard drive or SD card, install any stable firmware update, and factory-reset only the cameras that stay in a reboot loop. Once power and storage are stable, cameras usually stop power-cycling.

Why security cameras keep restarting, rebooting or power cycling

Most security camera restart problems come down to four things: unstable power, bad cabling, firmware/software crashes, or recorder/storage faults. Plug-in Wi-Fi cameras often reboot when voltage sags on long or cheap extension cords, especially when night vision LEDs or heaters turn on. PoE IP cameras can keep restarting if the PoE switch or NVR is overloaded, the Ethernet cable is damaged, or water has reached an outdoor connector. NVRs and DVRs themselves may keep rebooting when a failing hard drive draws too much power or when overheating triggers protection. Finally, buggy or interrupted firmware updates can leave a CCTV camera stuck in a boot loop until it’s reset or reflashed.

How to test if your security camera reboot issue is really fixed

After each change, leave your security cameras running for several hours and watch the logs or app history. Check the NVR/DVR log for “camera disconnected/connected” entries, and note if any channels still restart every few minutes. In the app, confirm that live view stays up without repeated “reconnecting” messages. Try night-time tests when IR is on, as weak power and PoE problems often show up after dark. If only one camera keeps rebooting while others on the same recorder are stable, that points to a local power, cable or firmware issue. If many cameras and the NVR all restart together, focus on the main power feed, UPS/surge protector or the recorder’s hard drive and cooling.

Security camera keeps restarting — quick troubleshooting tips

Most reboot loops are caused by power, cabling or storage issues, not the camera brand.

Quick path: plug a problem camera into a short, known-good outlet or PoE port and see if it still restarts randomly. If it stabilises, replace long or damaged extensions, upgrade weak adapters, or rerun suspect Ethernet cables. For recorders that keep rebooting, unplug cameras and test the NVR/DVR alone, then check the hard drive and internal fan. Once power and storage are stable, update camera and NVR firmware from the official app and factory-reset only the devices that stay stuck in a reboot loop. If your system is large or wired through walls, having a CCTV expert trace which segment is failing can save you hours.

Disclaimer: This information is AI-generated and intended for general guidance only. For advice specific to your security camera model, PoE or Wi-Fi setup, and NVR/DVR hardware, please consult a verified expert on Whizz-Tech before making decisions.

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FAQ

Why does my security camera keep restarting or rebooting by itself?

A security camera that keeps restarting is usually losing stable power, dealing with a damaged cable, or crashing due to firmware or storage problems. Long or cheap extension cords, overloaded PoE switches, moisture in connectors, failing hard drives or SD cards, and incomplete firmware updates are the most common triggers for a reboot loop.

Can bad power or PoE cause a security camera to keep rebooting?

Yes. An under-rated power adapter, weak outlet, long thin extension cord, or overloaded PoE port can all cause IP cameras to power cycle. When voltage drops under load (for example when IR LEDs switch on), the camera shuts down and restarts. Testing on a short, known-good outlet or PoE port is the fastest way to prove it’s a power issue.

How do I stop my Wi-Fi security camera from power cycling all day?

First, plug it into a good outlet with the original adapter and check for firmware updates in the app. Move the camera or router so the Wi-Fi signal is strong and turn off any unnecessary scheduled reboots. If the Wi-Fi security camera still keeps restarting, replace the power adapter and cable, remove or replace a suspect SD card, and factory-reset it as a last resort.

When should I factory-reset a security camera that keeps restarting?

If a camera is on a stable power source, with good cabling and no SD card, but stays stuck in a reboot loop or never finishes booting, a factory reset is usually the next step. Follow the manufacturer’s reset instructions, then add it back into the app or NVR as a new device. If it still reboots after a clean reset, the camera hardware is likely failing.

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