Note: To open the UltraNav Device Setting, click Start ➙ Control Panel ➙ Hardware and Sound

➙Mouse ➙ UltraNav.

Keyboard problems

•Problem: All or some keys on the keyboard do not work.

Solution: If an external numeric keypad is connected:

1.Turn off the computer.

2.Remove the external numeric keypad.

3.Turn on the computer and try using the keyboard again.

If the keyboard problem is resolved, carefully reconnect the external numeric keypad, external keyboard, making sure that you have seated the connectors properly.

If the problem remains, make sure that the correct device driver is installed.

1.Click Start ➙ Control Panel. Change the view ofControl Panel from Category to Large icons or Small icons.

2.Click Keyboard.

3.Select the Hardware tab. In the Device Properties, make sure that the Device Status is This device is working properly.

If keys on the keyboard still do not work, have the computer serviced.

•Problem: All or some keys on the external numeric keypad do not work.

Solution: Make sure that the external numeric keypad is correctly connected to the computer.

Display and multimedia devices

This section includes the most common display and multimedia devices problems which are computer screen, external monitor, and audio. Check these topics to learn more information.

Computer screen problems

•Problem: The screen is blank.

Solution: Do the following:

–Press Fn+F7 to bring up the image.

–If you are using the ac power adapter, or using the battery and the battery status indicator is on (is green), press Fn+F9 to make the screen brighter.

–If the sleep status indicator is on (is green), press Fn to resume from the sleep mode.

–If the problem persists, do the Solution in the problem below.

•Problem: The screen is unreadable or distorted.

Solution: Make sure that:

–The display device driver is installed correctly.

–The screen resolution and color quality are correctly set.

–The monitor type is correct.

To check these settings, do the following:

1.Right-click on the desktop, and click Personalize.

2.Click Display at the left.

3.Select Change display settings. Check whether the screen resolution is correctly set.

Chapter 10. Troubleshooting computer problems 131

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Lenovo 3444CUU Display and multimedia devices, Keyboard problems, Computer screen problems, Mouse UltraNav, Click Keyboard
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3444CUU specifications

The Lenovo 3444CUU is a versatile laptop designed to cater to a wide range of user needs, from business professionals to students. This model stands out due to its solid build quality, innovative technologies, and user-friendly features.

At the heart of the Lenovo 3444CUU lies an efficient Intel processor, designed to handle everyday computing tasks with ease. The inclusion of powerful integrated graphics ensures smooth performance during both productivity tasks and casual gaming sessions. With an ample amount of RAM, users can multitask seamlessly, switching between applications without experiencing any lag.

One of the most significant highlights of the Lenovo 3444CUU is its stunning display. The laptop is equipped with a high-definition screen that delivers vibrant colors and sharp visuals, making it ideal for watching movies, editing photos, or presenting slideshows. The anti-glare technology incorporated into the display reduces reflections, enabling comfortable viewing in various lighting conditions.

The design of the Lenovo 3444CUU emphasizes portability and convenience. It boasts a lightweight chassis, allowing users to easily carry it along for meetings or classes. The ergonomic keyboard provides a comfortable typing experience, complete with responsive keys that enhance productivity during long typing sessions. Additionally, the touchpad is accurate and supports multi-touch gestures for easy navigation.

Connectivity is a strong point for the Lenovo 3444CUU. It features multiple USB ports, an HDMI output, and an SD card reader, ensuring compatibility with a wide range of peripherals and devices. Wi-Fi and Bluetooth capabilities provide reliable wireless connectivity for seamless internet access and peripheral connections.

The battery life of the Lenovo 3444CUU is commendable, lasting throughout a full day of work or study on a single charge. This feature is particularly beneficial for users who are frequently on-the-go, eliminating the need to search for power outlets.

In terms of security, the Lenovo 3444CUU includes advanced features like a fingerprint reader and a secure BIOS, providing users with peace of mind. These technologies help protect sensitive data and ensure that only authorized users have access to the device.

Overall, the Lenovo 3444CUU stands out as a reliable, efficient, and feature-rich laptop suitable for various tasks, making it an excellent choice for anyone in need of a dependable computing solution. Its blend of performance, portability, and security features caters to the demands of modern users, making it a noteworthy addition to Lenovo’s diverse laptop lineup.
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