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Do Laptop AC Adapters Go Bad? (Answered!)

If you’ve ever experienced the frustration of your laptop suddenly powering down, with no explanation as to why, it’s likely that your laptop AC adapter has gone bad.

But what does “going bad” mean for an AC adapter? And how can you tell if yours is in need of replacement?

In this article, we’ll answer these questions and more by exploring the signs and symptoms associated with a failing AC adapter. So read on to learn how best to care for and maintain yours.

Quick Facts: Yes, electronic components can fail, including AC adapters for laptops. Over time, the circuit board may corrode, or wear and tear from travel can disrupt power flow. If the adapter is compromised, the laptop may not turn on even when plugged into a functioning outlet. To prevent damage, store the adapter properly and unplug it after using your laptop. Run self-diagnostics or take it to a shop to check if the current adapter needs replacing.

Do Laptop AC Adapters Go Bad?

It can be frustrating when your laptop won’t turn on or suddenly shuts off unexpectedly. One of the most likely culprits for such behavior is a faulty AC adapter.

This important device provides the power that keeps your machine running and, like all electrical components, it will eventually fail over time.

In addition to deterioration from wear and tear, sudden surges of electricity can also damage the internal circuitry and components of your adapter, leading to an abrupt drop in power delivery or even complete failure.

Therefore, while they don’t always go bad quickly, knowing the signs of an ailing AC adapter may just save you from experiencing unexplained shutdowns and other technical issues with your laptop.

How do you know if your laptop AC adapter is bad?

If your laptop is having trouble charging, it could be that your AC adapter is bad. But how do you know for sure? Read on to learn the most common signs that indicate a faulty AC adapter so that you can determine whether it needs to be replaced. 

The Power Light Does Not Turn On –

One of the most obvious signs of a bad AC adapter is when the power light does not turn on when you plug it in.

This indicates that there is no electrical connection between the wall outlet and your laptop.

In some cases, this could mean that the wall outlet or surge protector you’re using isn’t working properly, but it’s more likely that your AC adapter is malfunctioning and needs to be replaced.

Your Laptop Powers On But Won’t Charge –

If your laptop powers on but won’t charge, this indicates that there may be something wrong with the power supply coming from your AC adapter.

This could mean that the connector port isn’t making a good connection with your laptop or there may be an issue with one of the internal components of the adapter itself.

The Internal Components are Damaged –

If you open up your laptop and inspect its internal components, such as its fan or motherboard, and find them to be damaged then this could also indicate a problem with your laptop’s AC adapter as well.

It’s important to note that not all damage will be visible from the outside so make sure to open up your laptop and check for any signs of corrosion or other damage inside before replacing anything else in order to ensure you identify all potential causes of the problem.

The Connector Port Becomes Loose –

Over time, repeated plugging and unplugging can cause wear and tear on the connector port of an AC adapter, which can eventually lead to issues such as loose connections or short circuits within the device itself.

If you notice any signs of wear and tear in this area then it may be time to look into getting a replacement for your current adapter before further damage occurs.

Your Laptop Will Not Boot Up –

Finally, if none of these other signs are present but you still cannot get your laptop to boot up then chances are good that there is an issue with either its battery or its AC adapter.

Try charging your laptop overnight while disconnected from power sources (including external batteries) in order to rule out any possible issues with its battery first before looking into replacing its AC adapter entirely if necessary.

If you notice any of these signs, it’s important to replace the adapter as soon as possible to avoid further damage or downtime. A faulty adapter can cause all kinds of problems, so taking the time to find a reliable replacement is essential for keeping your laptop running smoothly.

How can I test my laptop AC adapter?

One of the most common laptop problems is a faulty AC adapter. While it’s easy to replace an adapter, it can be tricky to determine whether an adapter is actually the issue:

✓ To test the adapter, plug it into a wall outlet and use a multimeter to measure the voltage output.

✓ If it’s not providing enough power, replace it with one that is rated for your laptop model.

✓ You can also try swapping out the AC adapter with another laptop or device that takes the same type of adapter. This can help you determine whether the adapter itself is faulty or if there’s an issue with the laptop.

By testing your AC adapter, you can be sure that it is providing the right amount of power and not putting your laptop at risk of damage.

How long do laptop power adapters last?

The average lifespan of a laptop power adapter is typically around 3 to 5 years, with some lasting up to 10 years depending on how often it is used and how well it is cared for.

Factors such as the quality of the cord, usage environment, and temperature can all affect the life expectancy of a laptop power adapter. In general, higher-quality adapters tend to last longer than lower-quality models.

To maximize the life of your laptop power adapter, store it in a dry place away from direct sunlight and make sure it’s plugged into an outlet that doesn’t suffer from spikes or surges in electricity. Make sure to unplug any unused adapters when not in use and avoid exposing them to extreme temperatures.

If your laptop requires more power than your current adapter can provide, consider purchasing a higher-wattage model or one with better performance features such as heat resistance or faster charging speeds.


Yes, laptop AC adapters can certainly go bad. With its frequent use and wear (and sometimes tear!), the laptop charger is prone to damages that accumulate over time.

The adapter’s power cord can be broken when it’s bent or stretched too hard accidentally, leaving it unable to deliver a charge to the laptop battery.

Moreover, if you plug the wrong charger into your laptop, you will likely experience a short circuit and further damage the device.

As such, it is important to be careful with laptop chargers and make sure that you are using the correct charger for your machine.

If you ever suspect that your adapter has gone bad, replacing it with one specifically designed for your device is recommended.