Lenovo 57323748, B550 manual Display problems, Password problem

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Chapter 5. Troubleshooting

Troubleshooting -------------------------------------------------------------------------------------------------------------

If you do not find your problem here, see Chapter 2. The following section only describes problems that might negate the need to refer to the more comprehensive information in Chapter 2.

Display problems

When I turn on the computer, nothing appears on the screen.

When I turn on the computer, only a white cursor appears on a blank screen.

My screen goes blank while the computer is on.

•If the screen is blank, make sure that:

-The battery is installed correctly.

-The AC adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

-The computer power is on. (Press the power button again for confirmation.)

-The memory is installed correctly.

•If these items are properly set, and the screen remains blank, have the computer serviced.

•Restore backed-up files to your Windows environment or the entire contents of your hard disk to the original factory contents using OneKey Recovery. If you still see only the cursor on the screen, have the computer serviced.

•Your screen saver or power management may be enabled. Do one of the following to exit from the screen saver or to resume from sleep or hibernation mode:

-Touch the touchpad.

-Press any key on the keyboard.

-Press the power button.

-Press Fn+F2 to confirm whether the LCD screen has been turned off.

A Password problem

I forgot my password.

• If you forget your user password, you must take your computer to a

 

Lenovo authorized servicer or a marketing representative to have

 

the password changed.

 

• If you forget your HDD password, a Lenovo authorized servicer

 

cannot reset your password or recover data from the hard disk. You

 

must take your computer to a Lenovo authorized servicer or a

 

marketing representative to have the hard disk drive replaced. Proof

 

of purchase is required, and a fee will be charged for parts and

 

service.

 

• If you forget your supervisor password, a Lenovo authorized

 

servicer cannot reset your password. You must take your computer

 

to a Lenovo authorized servicer or a marketing representative to

 

have the system board replaced. Proof of purchase is required, and a

 

fee will be charged for parts and service.

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Contents Lenovo B550 First Edition January Copyright Lenovo Dear user Explanation of hard disk capacity Contents „ Read this first Important safety informationImportant safety information UnpackImportant safety information Correct usage proceduresService and upgrades Getting to know your computer Select models only Getting to know your computer Power buttonSystem status TouchpadRJ-45 port Getting to know your computerFan louvers VGA portUSB port Optical driveSpeakers Microphone jack Headphone jackBattery latch Manual Battery packSpring loaded Hard disk drive Learning the basics „ Connecting to the power„ Configuring the operating system „ Reading the manuals„ Shutting down your computer Learning the basicsPutting your computer into sleep state „ Charging the battery Using AC adapter and battery„ Checking battery status „ Removing the battery pack„ Handling the battery Left click button„ Numeric keypad „ Function key combinationsLearning the basics OneKey Rescue system button System status indicators E f„ Using VeriFace „ Using passwords„ Attaching a security lock not supplied „ Connecting a Bluetooth enabled device select models only Connecting external devices„ Connecting a universal serial bus USB device Enabling Bluetooth communicationsUsing the Internet „ Software configuration„ Hardware connection Using the Internet Wireless connection„ Using Wi-Fi/WiMAX Enabling wireless connectionOneKey Rescue system „ IntroductionTroubleshooting Frequently asked questionsTroubleshooting What can I do if the backup process fails?Display problems Password problemTroubleshooting Sleep or hibernation problems Computer screen problemsHard disk drive problem Troubleshooting Sound problemsBattery problems Startup problemTroubleshooting Other problems Replacing the battery To replace the battery, do the followingUpgrading and replacing devices Handling a hard disk drive Replacing the hard disk driveUpgrading and replacing devices To replace the hard disk drive, do the followingUpgrading and replacing devices To install an SO-DIMM, do the following Upgrading and replacing devices Removing the optical drive To remove the optical drive, do the followingUpgrading and replacing devices Appendix A. Getting help and service Calling the customer support centerAppendix A. Getting help and service Getting help around the worldLenovo warranty service telephone numbers Warranty Service Telephone NumbersCaring for your computer „ Be careful about where and how you workAppendix B. Use, and care information „ Notice of static-electricity„ For outdoor use „ Be gentle with your computer„ Carry your computer properly „ Handle storage media and drives properly„ Data safety „ Take care in setting passwords„ Other important tips „ Ergonomic information „ What if you are traveling?„ Questions about vision? „ General tips for maintenance „ Cleaning the cover of your computer „ Cleaning your computer keyboard„ Cleaning your computer display „ How to obtain warranty service Appendix C. Lenovo limited warranty„ What this warranty covers „ What your service provider will do to correct problems„ Replacement of a product or part Appendix C. Lenovo limited warranty„ Your additional responsibilities „ What this warranty does not cover „ Use of personal information„ Limitation of liability „ Dispute resolution „ Other rights„ European Economic Area EEA „ Suplemento de Garantía para México „ Lenovo Turkey address Lenovo Technology B.V. Turkiye Istanbul SubesiCourier or Depot Service „ Types of warranty serviceCustomer Replaceable Unit CRU Service On-site Service Customer Carry-In or Mail-In ServiceAppendix C. Lenovo limited warranty Product Exchange Service Appendix D. Customer replaceable units CRUs Appendix E. Notices „ Export classification notice Appendix E. NoticesEnergy Star model information WindowsWindows XP Wireless related information „ Wireless interoperability„ Safety information related to Mobile Broadband „ Usage environment and your healthTV tuner information Appendix E. Notices Electronic emissions notices „ Federal Communications Commission FCC Statement„ Industry Canada Class B Emission Compliance Statement „ Avis de conformité à la réglementation d’Industrie Canada„ German Class B Compliance Statement „ European Union Compliance Statement Class B Compliance Türkiye EEE Yönetmeliğine Uygunluk Beyanı Weee and recycling statementsTurkish statement of compliance Japan recycling statements EU Weee statements„ Disposing of a Lenovo Computer Components Appendix E. Notices Appendix F. Features and specifications Trademarks Index Index Page Do not Return IT to the Store New World. New Thinking.TM

B550, 57323748 specifications

The Lenovo B550 (model number 57323748) is a versatile and efficient business laptop designed to meet the demands of professional users who require both performance and reliability. This model stands out in Lenovo's lineup due to its well-balanced combination of features, technologies, and characteristics, making it an ideal choice for both on-the-go professionals and office environments.

One of the key features of the B550 is its durable design. The laptop is built with robust materials that withstand the rigors of frequent travel while maintaining a sleek and professional appearance. The spill-resistant keyboard adds an additional layer of protection, ensuring that accidental spills won't jeopardize the device's functionality.

Under the hood, the Lenovo B550 is powered by a choice of the latest Intel or AMD processors, delivering exceptional processing power for multitasking and demanding applications. Coupled with generous RAM options, users can seamlessly run multiple applications without experiencing lag, making it an efficient tool for productivity.

The B550 also boasts impressive storage options, including solid-state drives (SSDs) that not only increase the speed of boot times and application launches but also enhance overall system performance. Users can choose from a variety of storage capacities to suit their needs, ensuring that they have ample space for files and applications.

Display quality is important for any laptop, and the B550 does not disappoint. It features a high-resolution display with vibrant colors and sharp details, ensuring that users can enjoy crisp visuals whether they're working on a presentation or watching multimedia content. Additionally, anti-glare technology helps reduce eye strain during extended use.

Connectivity is another strong point of the B550. The laptop comes equipped with a range of ports, including USB Type-C, HDMI, and various USB-A ports, allowing for easy connection to peripherals and external displays. Additionally, integrated Wi-Fi and Bluetooth technologies provide reliable wireless connectivity for internet access and device pairing.

Security features are also a priority for the Lenovo B550. The device includes a fingerprint reader and TPM (Trusted Platform Module) to protect sensitive data and ensure secure login. This is particularly important for business users handling confidential information.

In conclusion, the Lenovo B550 (57323748) is a well-rounded business laptop that emphasizes durability, performance, and security. Its combination of advanced technologies and user-friendly features makes it a solid choice for professionals seeking a reliable machine that can keep up with their fast-paced work environment.
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