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Acer Chromebook C740-C4PE Troubleshooting

This troubleshooting page will help with diagnosing problems related to the Acer Chromebook C740-C4PE, released in 2015.

The Chromebook neither displays anything on the screen nor do any lights turn on.

Make sure the power adapter is plugged into an outlet in the wall and into your Chromebook. If the power light on the Chromebook does not turn on, you may have a broken power adapter.

Ensure that the computer charger is plugged into the outlet in the wall and into your Chromebook. After charging the computer, turn it on by pressing and holding the power button. If the computer does not turn on, plug the adapter into it in order to supply sufficient power. If the adapter does not turn on with the attached adapter, the battery may be broken. Consider purchasing a new one and use this guide.

If your battery works, but the computer still does not turn on, there is a problem with the motherboard. The most important parts are contained in motherboard; therefore, when it breaks, the computer will not function at all. Use this guide to learn how to replace your motherboard.

The computer does not show anything, or only partially shows things.

After a period of inactivity, the Chromebook will put itself into "sleep" mode, in order to save power. Push the power button to wake the device up.

Push the power button on the device. If the device does not turn on, plug in the power adapter and attempt to power on the device again.

The Chromebook will not display anything if its brightness is at the lowest level. To raise the brightness, use the key on the top row with the large sun icon.

If parts of your screen have random specs of color lighting up, your screen has dead pixels. Although some online fixes may be available, they largely do not work. Dead pixels are not a sign of the full screen dying, and a screen replacement is not entirely necessary unless you want to remove them. If you wish to remove these pixels, use this guide on how to replace your screen.

The keyboard isn't registering certain or any keys being pressed.

Sometimes a single key may become unresponsive due to water damage or sticky residues left behind. In this case, you should be able to individually replace the key.

If none of they keys are working on the laptop, then it is necessary to replace the entire keyboard.

The touchpad isn't responding to your hand, or has an inaccurate response to your hand.

If your touchpad is unresponsive, try cleaning off any dust or dirt that may be disrupting the touchpad sensors.

In some cases, the touchpad may have frozen due to a coding issue. Some fixes may be repeatedly pressing the Esc key, or rapidly tapping your fingers on the touchpad (similar to doing a drum-roll) for about 10 seconds. If neither of the two options work, try restarting your computer.

If your touchpad is not functioning after attempting the above mentioned solutions, it is broken. Use this guide to learn how to replace your touchpad.

The webcam displays a black image when turned on .

In some cases, a program may not recognize the Chromebook webcam for default usage. In cases like these, refer to the software manual regarding selecting a video device to use.

In some cases, the wires connected to the webcam may come loose. To fix this, follow this guide on disassembling your LCD screen to locate your webcam wiring and check connections.

If the webcam is connected properly and still does not function, it is broken and will need to be replaced.

Your Chromebook is not connecting to the WiFi, and pages are not loading.

Check to ensure that the WiFi is enabled. Click on your profile picture while on the desktop and make sure the switch for WiFi is in the "on" position.

Check to make sure your Chromebook is still connected to a network. If a signal becomes too weak, the Chromebook may disconnect itself which can cause this problem.

In some cases, loading a certain page may not work due to the fact that the server is down. It depends on the host of the website to fix this.

The device does not connect with other Bluetooth devices, or does not recognize them.

By default, Chromebooks disable Bluetooth to save battery life. Ensure your Bluetooth is enabled by clicking on your profile picture from the desktop and by clicking on the Bluetooth icon. From here you can enable your Bluetooth.

In order for a Bluetooth device to connect to the Chromebook, it must be in "pairing mode". Refer to the device manual to make sure it is ready to pair.

Sometimes when a device is having trouble pairing to the Chromebook, turning the Bluetooth off and on again may fix the problem. In addition, restarting the Chromebook may fix the issue.

The device is running slower than it had previously, or slower than you believe it should.

When a Chromebook has too many extensions, it may begin to slow down as it uses more RAM and CPU processing. Try uninstalling unnecessary extensions to speed the machine up by freeing up RAM and CPU processing.

If there are too many tabs open, the CPU will need to divide its processing power which causes the device to run more slowly. Close down any tabs not needed and try to monitor the amount of tabs you have open.

In rare cases, the SSD may cause the device to operate slowly. If you reset the Chromebook back to factory setting and the device continue to operate slowly, then you are encountering a SSD problem. If this is the case, please reference this guide to learn how to replace your SSD.

Using your Chromebook on your bed other carpeted areas may block ventilation and trap dust in the fans. This may cause the Chromebook to overheat. To fix this, first try moving the Chromebook onto a hard flat surface. If the heat keeps up, and the Chromebook is still running slow, consider using this replacement guide for replacing your fan and heat sink on the device.

When attempting to install a system update, the device displays an error.

In order to download the system update, your Chromebook must be connected to the internet. To check this, click on your profile picture from the desktop, and ensure that it is connected to a WiFi network.

If you are connected to the WiFi and you are still unable to update the Chromebook, a restart is the most common solution. Restarting the Chromebook will remove any possible errors in the Operating System that are preventing the device from updating.

In the rare event that the Chromebook is both connected to the WiFi and has been restarted, and the device still doesn't update, a "Powerwash" may be necessary. A Powerwash resets the Chromebook to its default settings, erasing any extra content on it. To do this, first back up your files to Google Drive. Once done, go to "Settings" and then click "Advanced Settings". Then, click on the button labeled "Powerwash". You will then be prompted to restart the computer. Click the "Restart" button and the device will then restart. It will have been reset to its factory settings.


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