2.Swap batteries with another similar model, if available.

If another similar ThinkPad model is available, then verify that the battery pack works in the other computer and that the battery pack for the other model works in this computer.

3.Verify the battery-status indicator. Refer to “Power status indicator” on page 9.

A power button problem

Problem: The system does not respond, and you cannot turn off the computer.

Solution: Turn off the computer by pressing and holding the power button for 4 seconds or more. If the system is still not reset, remove the ac power adapter and the battery.

Boot problems

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

If you receive an error message before the operating system loads, follow the appropriate corrective actions for POST error messages.

If you receive an error message while the operating system is loading the desktop configuration after the POST is completed, check the following items:

1.Go to the Lenovo Support Web site at http://www.lenovo.com/support and search for the error message.

2.Go to the Microsoft Knowledge Base homepage at http://support.microsoft.com/ and search for the error message.

Sleep and hibernation problems

•Problem: The computer enters sleep mode unexpectedly.

Solution: If the microprocessor overheats, the computer automatically enters sleep mode to allow the computer to cool and to protect the microprocessor and other internal components. Check the settings for sleep mode, using Power Manager.

•Problem: The computer enters sleep mode (the sleep indicator turns on) immediately after the power-on self-test.

Solution: Make sure that:

–The battery is charged.

–The operating temperature is within the acceptable range. Refer to “Operating environment” on page 14.

If the battery is charged and the temperature is within range, have the computer serviced.

•Problem: A critical low-battery error occurs, and the computer immediately turns off.

Solution: The battery power is getting low. Connect the ac power adapter to the computer and plug it into an electrical outlet, or replace the battery with a charged one.

•Problem: The computer display remains blank after you press Fn to return from sleep mode.

Solution: Check whether an external monitor was disconnected or turned off while the computer was in sleep mode. If you disconnected or turned off the external monitor, connect it or turn it on before resuming the computer from the sleep mode. When resuming the computer from the sleep mode without attaching the external monitor or turning it on, and the computer display remains blank, press F6 to bring up the computer display.

•Problem: The computer does not return from sleep mode, or the system status indicator (illuminated ThinkPad logo) blinks slowly and the computer does not work.

Chapter 9. Troubleshooting computer problems 129

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Lenovo 336655U, 3259AD9 manual Power button problem, Boot problems, Sleep and hibernation problems
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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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