Troubleshooting Sleep or hibernation problems

Chapter 5. Troubleshooting

Sleep or hibernation problems

The computer enters sleep mode unexpectedly.

The computer enters sleep mode immediately after Power-on self-test (POST).

•If the processor overheats, the computer automatically enters sleep mode to allow the computer to cool and to protect the processor and other internal components. Check the settings for sleep mode.

•Make sure that:

-The battery is charged.

-The operating temperature is within the acceptable range. See “Appendix B. Use, and care information” on page 40.

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

The critical low-battery error message appears, and the computer immediately turns off.

The computer does not return from sleep mode and the computer does not work.

•The battery power is getting low. Connect the AC adapter to the computer, or replace the battery with a fully charged one.

•If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the power indicator.

•If your computer is in sleep mode connect the AC adapter to the computer, then press any key or the power button.

•If your computer is in hibernation mode or power-off state. Connect the AC adapter to the computer, then press the power button to resume operation.

Note: If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press and hold the power button for 4 seconds or more. If the computer is still not reset, remove the AC adapter and the battery.

Computer screen problems

The screen is blank.

• Do the following:

The screen is unreadable or distorted.

Incorrect characters appear on the screen.

A message, “Unable to create overlay window,” appears when you try to start DVD playback.

-or-

You get poor or no playback of video, DVD or game applications.

-If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + to make the screen brighter.

-If the power indicator is in blinking, press the power button to resume from the sleep mode.

-If the problem persist, follow the solution in the following problem “The screen is unreadable or distorted.”

•Make sure that:

-The display device driver is installed correctly.

-The screen resolution and color quality are correctly set.

-The monitor type is correct.

•Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced.

•Do either of the following:

-If you are using 32-bit color mode, change the color depth to 16-bit mode.

-If you are using a desktop resolution over the optimum, reduce the display resolution and the color depth.

G550, 2958XFU specifications

The Lenovo 2958XFU G550 is a reliable and versatile laptop designed primarily for everyday computing tasks, making it a suitable option for both students and professionals. Launched in an era where portability and functionality took precedence, the G550 successfully combines essential hardware with user-friendly features.

One of the standout aspects of the Lenovo G550 is its 15.6-inch display, which offers a resolution of 1366 x 768 pixels. This display size strikes a balance between portability and usability, making it convenient to carry while providing ample screen real estate for productivity tasks such as word processing, web browsing, and multimedia consumption. The screen is designed with anti-glare technology, which helps reduce reflections and improves viewing comfort during extended use.

Powering the G550 is a robust Intel Core processor, which ensures smooth performance across a wide range of applications. The laptop typically comes with 2GB of RAM, allowing users to run multiple applications simultaneously without significant slowdowns. For storage, it features a spacious 320GB hard drive, providing sufficient space for documents, multimedia files, and additional software. This combination of CPU and storage makes the G550 an adept machine for daily tasks, including data analysis, spreadsheet management, and light gaming.

In terms of connectivity, the G550 offers multiple options. It includes USB ports for peripheral devices, an HDMI port for connecting to external displays, and an Ethernet port for wired internet access. Additionally, built-in Wi-Fi ensures that users can connect to wireless networks with ease. The inclusion of a multi-in-one card reader further enhances its functionality, allowing for quick file transfers from cameras and other devices.

Another notable characteristic of the Lenovo G550 is its full-sized keyboard, which is designed for comfortable typing. The tactile feedback of the keys contributes to an enhanced typing experience, making it easier to work on documents for extended periods. The trackpad is responsive and supports multi-touch gestures, facilitating seamless navigation through the operating system.

Overall, the Lenovo 2958XFU G550 presents a well-rounded package for users seeking a dependable laptop for everyday tasks. Its balance of performance, functionality, and user-centric features makes it a valuable choice in the world of portable computing. Whether used for education, work, or casual use, the G550 delivers an intuitive and efficient experience for a wide array of computing needs.

Lenovo 2958XFU, G550 manual Troubleshooting Sleep or hibernation problems, Computer screen problems

Models: G550 2958XFU