Follow the appropriate corrective actions for Power-on self-test (POST) . See “Error messages and beep errors” on page 159.

3.Verify that the latest BIOS 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 the memory” on page 91

5.Run diagnostic programs, see “Diagnosing problems” on page 157.

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 and Windows Vista:

1.Click Start, and then click 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 the ! mark is to the left of the adapter name under Network adapters, you might not use 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.

For Windows XP:

1.Click Start, and then click Control Panel.

2.Click Performance and Maintenance, and then click System.

3.Click the Hardware tab, and click the Device Manager button.

4.If the x mark is to the left of the adapter name under Network adapter, you might not use the correct driver or the driver is not enabled. To update the driver, right-click the highlighted adapter.

5.Click Properties. The Properties window appears.

6.Click the Driver tab.

7.Click the Update Driver button. The Update Device Driver wizard appears. 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, make sure 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.

•Problem: The adapter stops working for no apparent reason.

Chapter 10. Troubleshooting computer problems 163

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Lenovo 5016W78 manual Networking, Ethernet problems, Click Performance and Maintenance, and then click System
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5016W78 specifications

The Lenovo 5016W78 is a powerful and versatile laptop designed to meet the needs of both professionals and casual users. Packed with advanced features and robust technology, this device stands out in today's competitive laptop market.

One of the key characteristics of the Lenovo 5016W78 is its design. It boasts a sleek and modern appearance, with a lightweight chassis that makes it easy to carry around. The high-quality build materials ensure durability, allowing users to rely on their laptop for daily tasks without worry.

The display is another highlight, featuring a vibrant Full HD (1920 x 1080) resolution. This crisp and clear display enhances the viewing experience, whether you are streaming videos, editing photos, or working on presentations. The anti-glare technology reduces reflections and eye strain, making it perfect for extended use.

Under the hood, the Lenovo 5016W78 is fueled by a powerful Intel Core processor, which delivers impressive performance for multitasking and demanding applications. Coupled with up to 16GB of RAM, users can run multiple applications seamlessly without experiencing any lag. The storage options include fast SSD drives, providing swift access to data and ensuring quick boot times.

Connectivity is thorough, offering a wide array of ports including USB-C, USB 3.0, HDMI, and a headphone jack. This range of connectivity makes it easy to connect to various devices such as external monitors, projectors, and peripherals. Additionally, the laptop includes built-in Wi-Fi 6 technology, ensuring robust and reliable internet connectivity for online activities.

The Lenovo 5016W78 also focuses on user experience and security. The backlit keyboard provides comfortable typing, even in low light situations, while the precision touchpad ensures easy navigation. For security, a fingerprint reader is integrated, giving users an additional layer of protection for their sensitive data.

Battery life is impressive, with up to 10 hours on a single charge, allowing users to work on the go without constantly searching for power outlets.

In summary, the Lenovo 5016W78 combines sleek design, powerful performance, and user-friendly features, making it an ideal choice for anyone seeking a dependable laptop for work or leisure. Its advanced technologies ensure it remains a relevant choice in an ever-evolving tech landscape, catering to the needs of today’s mobile and tech-savvy users.
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