For Windows 8 or Windows 8.1: Open Control Panel, and then click System and Security System

System Protection System Restore.

If this does not correct the problem, continue with the next step.

6.Run the diagnostic program. See “Lenovo Solution Center” on page 54 for more information.

If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 32 for more information.

If you are unable to run the diagnostic program, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 32 for more information.

If the diagnostic program does not detect a hardware failure, continue with the next step.

7.Use an antivirus program to see if your computer has been infected by a virus. If the program detects a virus, remove the virus.

8.If none of these actions solve the problem, seek technical assistance. See “Lenovo Support Web site” on page 32 for more information.

Troubleshooting

Use the troubleshooting information to find solutions to problems that have definite symptoms.

If the symptom your computer is experiencing occurred immediately after you installed a new hardware option or new software, do the following before referring to the troubleshooting information:

1.Remove the new hardware option or software. If you must remove the computer cover to remove a hardware option, ensure that you review and follow the electrical safety information provided with your computer. For your safety, do not operate the computer with the cover removed.

2.Run the diagnostic program to ensure that your computer is operating correctly.

3.Reinstall the new hardware option or software following the manufacturer's instructions.

Select the problem your computer is experiencing from the following list:

“Audio problems” on page 37

“CD problems” on page 39

“DVD problems” on page 40

“Intermittent problems” on page 41

“Keyboard, mouse, or pointing device problems” on page 42

“Monitor problems” on page 44

“Networking problems” on page 46

“Option problems” on page 48

“Performance and lockup problems” on page 49

“Printer problems” on page 51

“Serial port problems” on page 51

“Software problems” on page 52

“USB problems” on page 53

Audio problems

Select your symptom from the following list:

“No audio in Windows” on page 38

Chapter 5. Troubleshooting and diagnostics 37

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Lenovo E93 manual Troubleshooting, Audio problems, System Protection System Restore

E93 specifications

The Lenovo E93 is a powerful and versatile desktop computer that caters to the needs of both business and personal users. This compact system is designed to deliver high performance while occupying minimal desk space, making it an ideal choice for modern work environments where efficiency and productivity are paramount.

One of the standout features of the Lenovo E93 is its performance. Powered by the latest Intel Core processors, it provides ample processing power for multitasking and demanding applications. Users can choose from different configurations that include varying RAM options, generally starting from 8GB and can be expanded up to 32GB, facilitating smooth operation even when running multiple applications simultaneously.

In terms of storage, the E93 offers a range of SSD and HDD options. With SSD drives, users experience faster boot times, reduced load times for applications, and overall increased responsiveness. The device also supports hybrid storage configurations, allowing for an ideal balance between speed and capacity.

The E93 incorporates advanced connectivity options, which are crucial for any modern desktop. It features multiple USB 3.2 ports, HDMI, and DisplayPort outputs, ensuring compatibility with a wide range of peripherals and external displays. Users can easily connect to high-speed networks, with support for both wired Ethernet and wireless connectivity options.

Security is a key focus of the Lenovo E93. It includes features such as a Trusted Platform Module (TPM) for secure encryption, and various biometric options like a fingerprint scanner, which ensures that sensitive data remains protected from unauthorized access. In addition, it has been designed to meet various compliance standards, making it suitable for enterprise environments.

The design of the E93 is both functional and aesthetically pleasing. It sports a compact chassis that can be easily integrated into different workspace setups. The convenience of tool-less access to components also enhances serviceability, allowing for easy upgrades and repairs.

For users who place importance on energy efficiency, the Lenovo E93 is ENERGY STAR certified. This makes it an environmentally friendly choice, reducing energy costs while lessening its overall carbon footprint.

Overall, the Lenovo E93 stands out as a robust desktop solution tailored to meet the diverse needs of users in both professional and personal contexts. With its impressive performance, comprehensive security features, and potential for future upgrades, it is well-equipped to handle today's demanding computing tasks while being mindful of efficiency and design.