Ethernet problems

For Ethernet problems, select your symptom from the following list:

•“Your computer cannot connect to the network” on page 63

•“The adapter stops working for no apparent reason” on page 63

•“If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection fails or errors occur” on page 64

•“If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps. Instead, it connects at 100 Mbps” on page 64

Your computer cannot connect to the network

Symptom: Your computer cannot connect to the network.

Actions: Ensure that:

•The cable is installed properly.

The network cable must be securely connected to both the Ethernet connector of your computer and 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.

•The cable is installed properly.

•You are using the correct device driver.

On the Windows 7 operating system, do the following:

1.Click Start ➙ Control Panel.

2.Click Hardware and Sound.

3.Click Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

4.If an exclamation mark is displayed next to an adapter name under Network adapters, you might not be using the correct driver or the driver is not enabled. To update the driver, right-click the highlighted adapter.

5.Click Update Driver Software, and then follow the instructions on the screen.

On the Windows 8 operating system, do the following:

1.Open Control Panel.

2.Click Hardware and Sound.

3.Click Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

4.If an exclamation mark is displayed next to an adapter name under Network adapters, you might not be using the correct driver or the driver is not enabled. To update the driver, right-click the highlighted adapter.

5.Click Update Driver Software, and then follow the instructions on the screen.

•The switch port and the adapter have the same duplex setting.

If you configured the adapter for full duplex, ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode can degrade performance, cause data loss, or result in lost connections.

•You have installed all networking software that is necessary for your network environment. Check with your LAN administrator for the necessary networking software.

The adapter stops working for no apparent reason

Symptom: The adapter stops working for no apparent reason.

Chapter 10. Troubleshooting and diagnostics 63

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Lenovo 2117EKU manual Ethernet problems, Your computer cannot connect to the network
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2117EKU specifications

The Lenovo 2117EKU is a versatile and robust laptop designed to cater to the needs of both professionals and casual users. This device is notable for its sleek design and impressive performance, making it suitable for a wide array of tasks from everyday computing to more demanding applications.

One of the standout features of the Lenovo 2117EKU is its processor. It is equipped with an efficient and powerful Intel Core processor, providing users with a seamless experience whether they are multitasking, streaming videos, or engaging in heavier applications like graphic design or software development. The integration of Intel’s latest technology ensures that the laptop can handle modern software demands while maintaining energy efficiency.

Another key characteristic of the Lenovo 2117EKU is its display. The laptop boasts a vibrant high-definition screen that delivers crisp visuals and vivid colors. This makes it particularly appealing for media consumption, whether for watching movies or working on photo editing projects. The anti-glare technology integrated into the display also enhances visibility in various lighting conditions, reducing eye strain during extended use.

In terms of memory and storage, the Lenovo 2117EKU offers ample options. With configurations supporting substantial RAM capacity, users can enjoy improved performance during heavy multitasking. Furthermore, the options for solid-state drives (SSD) provide faster loading times and improved overall system responsiveness compared to traditional hard drives.

The connectivity options on the Lenovo 2117EKU are also noteworthy. It includes multiple USB ports, HDMI outputs, and a headphone jack, facilitating easy connections to various devices and peripherals. Wireless connectivity is supported through the inclusion of Wi-Fi and Bluetooth capabilities, ensuring users remain connected to the internet and other devices without any hassle.

Additionally, the Lenovo 2117EKU emphasizes security with features such as a fingerprint reader and hardware encryption options, providing users peace of mind regarding data protection. This laptop is built with durability in mind, featuring a robust chassis that meets military-grade specifications for reliability.

In summary, the Lenovo 2117EKU stands out with its strong performance, stunning display, extensive connectivity options, and solid security features. These attributes make it an ideal choice for students, professionals, and anyone in between. Whether for work or entertainment, the Lenovo 2117EKU is crafted to meet diverse user needs while delivering a top-notch computing experience.
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