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 13.

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 Fn+F7 to bring up the computer display.

•Problem: The computer does not return from sleep mode, or the sleep indicator stays on and the computer does not work.

Solution: If the system does not return from sleep mode, it might have entered sleep or hibernation mode automatically because the battery is depleted. Check the sleep indicator.

–If the sleep indicator is on, your computer is in sleep mode. Connect the ac power adapter to the computer; then press Fn.

–If the sleep indicator is off, your computer is in hibernation mode or power-off state. Connect the ac power adapter to the computer; then press the power button to resume operation.

If the system still does not return from sleep mode, your system might stop responding and you might not be able to turn off the computer. In this case, you need to reset the computer. If you have not saved your data, it might be lost. To reset the computer, press and hold the power button for 4 seconds or more. If the system is still not reset, remove the ac power adapter and the battery.

•Problem: Your computer does not enter sleep or hibernation mode.

Solution: Check whether any option has been selected to disable your computer from entering sleep or hibernation mode.

If your computer tries to enter sleep mode but the request is rejected, the device attached to the USB connector might have been disabled. If this occurs, do a hot-unplug-and-plug operation for the USB device.

•Problem: The battery discharges slightly while the computer is in hibernation mode.

Solution: If the wakeup function is enabled, the computer consumes a small amount of power. This is not a defect. For details, refer to “Power-saving modes” on page 29.

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Lenovo 2344BMU manual Sleep and hibernation 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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