Lenovo E520, E420, 114155U manual Beep errors, Memory problems, Networking, Ethernet problems

Solution: Your screen saver or power management may be enabled. Do either of the following:

–Touch the TrackPoint or the touch pad, or press a key to exit the screen saver.

–Press the power switch to resume from sleep (standby) or hibernation.

Beep errors

Table 7. Beep errors

Problem	Solution
One short beep, pause, three short beeps, pause, three	Make sure that memory modules are installed correctly. If
more short beeps, and one short beep	they are, and you still hear the beeps, have the computer
	serviced.
One long and two short beeps	The video function has a problem. Have the computer
	serviced.
Five beeps	The system board has a problem. Have the computer
	serviced.

Memory problems

Print these instructions now and keep it with your computer for reference later.

If your memory is not operating properly, check the following items:

1.Verify that the memory is installed and seated correctly in your computer.

It may be necessary to remove all added memories to test the computer with only the factory-installed memories, and then reinstall the memory one at a time to ensure a proper connection. For the procedures to remove and reinstall a memory, refer to “Replacing memory” on page 93.

2.Check for error messages during startup.

Follow the appropriate corrective actions for Power-on self-test (POST) “Error messages” on page 133.

3.Verify that the latest UEFI for your model has been installed.

4.Verify the proper memory configuration and compatibility including the maximum memory size and the memory speed.

For details, refer to the instructions in “Replacing memory” on page 93.

5.Run diagnostic test. See “Diagnosing problems” on page 131.

Networking

The following are the most common networking problems:

Ethernet problems

•Problem: Your computer cannot connect to the network.

Solution: Make sure that:

–The cable is installed properly.

The network cable must be securely connected both to the Ethernet connector of your computer and to the RJ45 connector of the hub. The maximum allowable distance from the computer to hub is 100 meters. If the cable is connected and the distance is within acceptable limits but the problem persists, try a different cable.

–You are using the correct device driver. For Windows 7:

1.Click Start, and then click Control Panel.

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