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Lenovo ThinkPad E540 Troubleshooting

This is a short guide to assist with replacement of damaged or defective components to the Lenovo ThinkPad E540.

Below are some of the common issues users face.

Fails to Hold Charge

When unplugged, the laptop won't power on.

Defective Battery

The computer works when plugged into an outlet, but shuts off when unplugged. This could be caused by a defective battery. Replacement is easy with this simple guide.

Damaged or Faulty Display

Screen is cracked or displaying incorrectly.

Damaged Display

If the screen is damaged or failing to display properly, you need to replace the screen. This process could be found here.

Keyboard Not Working

Keyboard buttons have fallen out or are not working.

Faulty Keyboard

Whether individual keys are damaged or the keyboard fails to work, correcting this issue involves replacing the keyboard entirely. This process can be tricky, but this guide makes it easy.

Will Not Connect to WiFi

When within range, the laptop will not connect to any WiFi hub.

Airplane Mode is set On

Make sure the WiFi is set to on (try the "F8 key"). If this is not the issue, airplane mode could be active.

Airplane mode is a setting which cuts off all communication including WiFi connectivity, so by turning this off it will allow your computer to connect. If this is not the issue, proceed to faulty WiFi card below.

Faulty WiFi card

The WiFi card is responsible for sending and receiving WiFi signal. If you are having trouble connecting to any WiFi, this could be resolved by replacing the WiFi card. This guide can clarify the process.


Laptop becomes hot only after short use.

Improper Ventilation or Dusty Fan

If your Lenovo is overheating, it could be due to a improper ventilation. This could be caused by a number of things. If the laptop is not set on an appropriate surface, the fan will be unable to pull air into the device to cool it fully. If the device is still overheating when placed on an appropriate surface, you may be experiencing a faulty or dusty fan. If you follow the steps to clean the fan, then proceed to replace it using the guide found here.

Running Slowly

Programs are not running as fast as they should or used to be, so it could be either a faulty RAM or Hard Drive.

Hard Drive

The Hard Drive is responsible for nearly all of the functions for your laptop. Replacing it will wipe all your current saved data and allow you to start with a clean slate. The guide to replace the Hard Drive can be found here.


The RAM is responsibly for temporarily holding all of your data. The guide to replace the RAM can be found here.

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