Note: If your computer cannot detect the external monitor, click the Detect button.

4.Click the icon for the desired monitor (the Monitor-2icon is for the external monitor).

5.Click Advanced Settings.

6.Click the Monitor tab.

7.Select the correct screen refresh rate.

•Problem: Wrong characters are displayed on the screen.

Solution: Did you follow the correct procedure when installing the operating system or application program? If you did, have the external monitor serviced.

•Problem: The Extend desktop function does not work.

Solution: Enable the Extend desktop function by doing the following:

1.Connect the external monitor to the monitor connector, and then connect the monitor to an electrical outlet.

2.Turn on the external monitor and the computer.

3.Right-click on the desktop, and click Screen resolution.

4.Click the Monitor-2icon.

5.Select Extend these displays for multiple displays.

6.Click the Monitor-1icon (for the primary display, the computer display).

7.Set the resolution for the primary display.

8.Click the Monitor-2icon (for the external monitor).

9.Set the screen resolution for the secondary display.

10.Set the relative position of each monitor by dragging its icon. You can set the monitors in any relative position, but the icons must touch each other.

11.Click OK to apply the changes.

Note: To change the color settings, right-click on the desktop, and click Screen resolution. Click Advanced Settings, select the Monitor tab, then set Colors.

•Problem: If you use the Extend desktop function, you cannot set a higher resolution or higher refresh rate on the secondary display.

Solution: Change the resolution and the color depth to lower settings for the primary display. Refer to the solution to the above problem.

•Problem: Display switching does not work.

Solution: If you use the Extend desktop function, disable it, and change the display output location. If a DVD movie or a video clip is playing, stop the playback, close the application, and then change the display output location.

•Problem: The screen position on the external monitor is incorrect when that monitor is set for a high resolution.

Solution: Sometimes, when you use a high resolution such as 1600x1200, the image is shifted to left or right on the screen. To correct this, first make sure that your external monitor supports the display mode (the resolution and the refresh rate) that you have set. If it does not, set a display mode that the monitor supports. If it does support the display mode you have set, go to the setup menu for the monitor itself and adjust the settings there. Usually the external monitor has buttons for access to the setup menu. For details, see the documentation that comes with the monitor.

Chapter 9. Troubleshooting computer problems 125

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Lenovo 336655U, 3259AD9 manual Click Advanced Settings
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3259AD9, 336655U specifications

The Lenovo 336655U and 3259AD9 are distinguished models within Lenovo's extensive portfolio, specifically designed to cater to the needs of both professionals and everyday users. These devices combine cutting-edge technology with user-friendly features, ensuring a seamless experience for various tasks, from everyday computing to more intensive applications.

Starting with the Lenovo 336655U, this model is powered by Intel’s reputable Core i5 processor, providing a perfect blend of performance and efficiency. With a base clock speed of 2.4 GHz, the processor can handle multitasking with ease, allowing users to run multiple applications simultaneously without a hitch. The device is equipped with 8GB of RAM, which supports smooth performance for applications ranging from productivity software to creative tools. Storage is provided by a 256GB SSD, which not only offers ample space for documents, multimedia files, and programs but also ensures faster boot times and data access compared to traditional hard drives.

On the other hand, the Lenovo 3259AD9 is tailored for users who need reliable performance in a compact design. It features an AMD Ryzen 5 processor, a powerful alternative that provides exceptional performance for both demanding tasks and light usage scenarios. With integrated Radeon graphics, the device supports casual gaming and video streaming with ease. Similar to its counterpart, the 3259AD9 comes with 8GB RAM and a 256GB SSD, ensuring a speedy and efficient computing experience.

Both models prioritize connectivity, featuring multiple USB ports, HDMI output, and an Ethernet port. This ensures compatibility with various peripherals and external displays. Furthermore, the inclusion of Bluetooth technology allows for convenient wireless connections to headphones, keyboards, and mice, enhancing flexibility for users on the move.

Display quality is also a focal point in these Lenovo models. The Lenovo 336655U sports a 15.6-inch Full HD display, offering vibrant colors and sharp detail, perfect for media consumption and professional work. The Lenovo 3259AD9 boasts a similar screen size and resolution, making both devices suitable for graphic design as well as everyday tasks.

In terms of battery life, both models are designed to last through a full workday, enabling users to work efficiently without the constant need for charging. Their sleek and lightweight designs make them highly portable, catering to professionals and students alike.

In conclusion, the Lenovo 336655U and 3259AD9 stand out as reliable, efficient, and versatile machines. Whether for professional work, educational purposes, or everyday use, these models embody Lenovo’s commitment to quality and performance in the dynamic world of computing.
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