2.Check all power connections. Remove any power strips and surge protectors to connect the ac power adapter directly to the ac power outlet.

3.Inspect the ac power adapter. Check for any physical damage, and make sure that the power cable is firmly attached to the adapter brick and the computer.

4.Verify the ac power source is working by attaching another device to the outlet.

5.Remove the computer from a ThinkPad port replicator or docking station. Refer to “Detaching a ThinkPad port replicator or docking station” on page 107.

6.Remove all devices and then test for system power with minimal devices attached.

a.Disconnect the ac power adapter and all cables from the computer.

b.Close the computer display, and turn the computer over.

c.Remove the battery, memory module, PCI Express Mini Cards, Ultrabay device, hard disk drive or solid state drive or mSATA solid state drive. See Chapter 6 “Replacing devices” on page 69.

d.Wait for 30 seconds, and then reinstall the memory module and the known good battery or the ac power adapter to test the computer with minimal devices attached first.

e.Reinstall each device one at a time that you have removed in the earlier steps.

If your computer does not run on battery power, check the following items:

1.Remove and reseat the battery to make sure that it is properly connected. Refer to “Replacing the battery” on page 69.

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 indicators” on page 8.

The battery-status indicator is normally illuminated whenever the battery is installed and the computer is on, or the ac power adapter is connected and the battery is charging. This indicator might be blinking or solid in either orange or green color depending on the status of the battery.

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.

Startup 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, check the following item:

•If you receive an error message before the operating system loads, follow the appropriate corrective actions for power-on self-test (POST) error messages. See “Error messages” on page 136

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

Chapter 10. Troubleshooting computer problems 149

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Lenovo 2344BMU manual Power button problem, Startup problems
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2344BMU specifications

The Lenovo 2344BMU, often recognized for its blend of performance and efficiency, caters to a wide range of users, from students to professionals. This laptop is part of Lenovo's esteemed lineup, which is known for its robust construction and versatile features.

One of the standout characteristics of the Lenovo 2344BMU is its sleek design, which combines modern aesthetics with functionality. The lightweight chassis makes it easily portable, making it an ideal companion for those on the go. The laptop's display features a vibrant resolution, providing crisp visuals that enhance the user experience whether for work or entertainment.

At the heart of the 2344BMU lies an Intel processor, delivering efficient performance that ensures seamless multitasking. Coupled with sufficient RAM, the device can handle daily tasks, from web browsing to running demanding applications, with remarkable ease. The inclusion of solid-state drives (SSD) in this model is another highlight, significantly improving boot times and application load speeds.

In terms of connectivity, the Lenovo 2344BMU comes equipped with multiple USB ports, an HDMI output, and an Ethernet port, allowing for versatile connectivity options. This makes it easy to connect to various external devices, such as monitors and storage devices, enhancing its usability for presentations and data sharing.

Another key feature of the 2344BMU is its comprehensive battery life. It is designed to support extended usage without the need for frequent recharging, making it ideal for users who may need to work away from power outlets. The device also incorporates energy-efficient components, contributing to lower energy consumption, which is a boon for eco-conscious users.

In terms of software, the Lenovo 2344BMU typically comes pre-installed with a user-friendly operating system, often Windows, which provides access to a myriad of applications and services. Lenovo also integrates its own software solutions, enhancing security and system performance.

Overall, the Lenovo 2344BMU stands out for its combination of portability, performance, and connectivity features. This makes it an excellent choice for a diverse user base looking for a reliable and efficient laptop. Whether for personal use, academic pursuits, or professional tasks, the 2344BMU delivers solid performance to meet various computing needs.
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