User Guide Lenovo K2450
Before using this information and the product it supports, be sure to read and understand the following: • Safety, Warranty, and Setup Guide • “Important safety information” on page iv • Appendix D “Notices” on page 39 The Safety, Warranty, and Setup Guide has been uploaded to the Web site. To refer to it, go to http://www.lenovo.com/UserManuals. First Edition (March 2014) © Copyright Lenovo 2014.
Contents Read this first ............................................ iii Chapter 5. Recovery overview.................22 Important safety information .............................................. iv Conditions that require immediate action ................. iv Safety guidelines ..............................................................v Recovery solutions on the Windows 7 operating system ......................................................................................
ii User Guide
Read this first Be sure to follow the important tips given here to continue to get the most use and enjoyment out of your computer. Failure to do so might lead to discomfort or injury, or cause your computer to fail. Protect yourself from the heat that your computer generates. When your computer is turned on or the battery is charging, the base, the palm rest, and some other parts may become hot. The temperature they reach depends on the amount of system activity and the level of charge in the battery.
Protect your computer and data when moving it. Before moving a computer equipped with a hard disk drive, do one of the following, and make sure that the power switch is off or is blinking: • Turn it off. • Put it in sleep mode. • Put it in hibernation mode. This will help to prevent damage to the computer, and possible loss of data. Handle your computer gently. Do not drop, bump, scratch, twist, hit, vibrate, push, or place heavy objects on your computer, display, or external devices.
internal electronic component has failed in a safe and controlled manner. Or, they might indicate a potential safety issue. However, do not take risks or attempt to diagnose the situation yourself. Contact the Customer Support Center for further guidance. For a list of Service and Support phone numbers, go to the following Web site: http://www.lenovo.com/support/phone Frequently inspect your computer and its components for damage or wear or signs of danger.
Power cords and power adapters DANGER Use only the power cords and power adapters supplied by the product manufacturer. The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm2, or better. For other countries, the suitable types shall be used accordingly. Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard.
outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating. Consult an electrician for more information if you have questions about power loads and branch circuit ratings. Be sure that the power outlet you are using is properly wired, easily accessible, and located close to the equipment. Do not fully extend power cords in a way that will stress the cords.
Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or flame to “vent” from the battery pack or coin cell. If your battery is damaged, or if you notice any discharge from your battery or the buildup of foreign materials on the battery leads, stop using the battery and obtain a replacement from the battery manufacturer. Batteries can degrade when they are left unused for long periods of time.
Dispose of the battery as required by local ordinances or regulations. The following statement applies to users in the state of California, U.S.A. California Perchlorate Information: Products containing manganese dioxide lithium coin cell batteries may contain perchlorate. Perchlorate Material - special handling may apply, See www.dtsc.ca.
Electrical current safety information DANGER Electric current from power, telephone, and communication cables is hazardous. To avoid a shock hazard: • Do not use your computer during a lightning storm. • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. • Connect all power cords to a properly wired and grounded electrical outlet. • Connect to properly wired outlets any equipment that will be attached to this product.
Using headphones or earphones CAUTION: Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the equalizer to maximum increases the earphone and headphone output voltage and the sound pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level.
xii User Guide
Chapter 1. Product overview This chapter introduces the computer hardware features. • “Front view” on page 1 • “Left-side view” on page 3 • “Right-side view” on page 4 • “Bottom view” on page 5 • “Status indicators” on page 6 • “Features” on page 7 • “Specifications” on page 8 Front view a b c j d i h g f e Figure 1.
a Camera Use the camera to take pictures or hold a video conference. b Camera indicator The camera indicator is on when the camera is in use. c Keyboard light The keyboard light enables you to use your computer when the lighting condition is not ideal. To turn on the keyboard light, press Fn + Esc. To turn it off, press the combination again. Note: Avoid using your computer in dark conditions for prolonged periods. It is bad for your eyes. d Power button Press this button to turn on the computer.
Left-side view a b c d e f Figure 2. Left-side view a Security keyhole d HDMI connector b ac power connector e USB 2.0 connectors c Fan louvers f Combo audio jack a Security keyhole To protect your computer from theft, you can purchase a security cable lock that fits this keyhole to lock your computer to a stationary object. For more information, refer to “Attaching a mechanical lock” on page 21.
d HDMI connector Use the high-definition multimedia interface (HDMI) connector to connect a compatible digital audio device or video monitor, such as a high-definition television (HDTV). e USB 2.0 connector Use the USB 2.0 connector to connect devices compatible with a USB interface, such as a USB printer or a digital camera. Attention: When you attach a USB cable to the connector, make sure that the USB mark is facing upward. Otherwise the connector might be damaged.
a Media card reader slot For more information, refer to “Using a flash media card” on page 18. b USB 3.0 connector Use the USB 3.0 connectors to connect a USB 1.1, 2.0, or 3.0 device, such as a USB printer or a digital camera. Attention: When you attach a USB cable to the connector, make sure that the USB mark is facing upward. Otherwise the connector might be damaged. c Monitor connector Use the monitor connector to connect an external monitor or projector to your computer.
d Speakers To adjust the sound level of the built-in speakers, see “Function key combinations” on page 10. Status indicators This topic describes the status indicators. Note: Your computer might look different from the following illustration. c b a Figure 5. Status indicators a Active Protection System™ (APS) status indicator • Green: Impact shock has been detected, so the hard disk drive is temporarily locked. • Off: No impact shock has been detected, and the hard disk drive is operating normally.
• Amber: The battery discharge level is between 5% and 20%. • Fast-blinking amber: The battery charge or discharge level is 5% or less. • Off: The battery is detached or the computer is powered off. Features This topic provides information about the computer features. Processor • To view the processor information of your computer, do either of the following: – Windows® 7: Click Start, right-click Computer. Then click Properties. – Windows 8.
Wireless features • Integrated wireless LAN • 100/1000 Mbps Ethernet communication Specifications This topic lists the physical specifications for your computer.
Chapter 2. Using your computer This chapter provides information on using some of the computer components.
Registering your computer When you register your computer, information is entered into a database, which enables Lenovo to contact you in case of a recall or other severe problem. After you register your computer with Lenovo, you will receive quicker services when you call Lenovo for help. In addition, some locations offer extended privileges and services to registered users. To register your computer with Lenovo, do one of the following: • Go to http://www.lenovo.
The following is a brief introduction to the function key combinations. Configuring Keyboard light (Fn + Esc) • Windows 7: Press Fn + Esc to open the camera and audio settings window. The camera preview is turned on. Then, you can change the camera and audio settings as desired. • Windows 8.1: Press Fn + Esc to enable or disable the camera. Power conservation (Fn + F1) Puts your computer into sleep mode. Display backlight feature (Fn + F2) Enables or disables the display backlight feature.
Adjusting display brightness (Fn + up or down arrow) To adjust the display brightness, do the following: • Fn + up arrow: Increases the display brightness. • Fn + down arrow: Decreases the display brightness. Other functions • Fn + Insert: Has the same function as the Numeric Lock key on a conventional keyboard. • Fn + PrtSc: Has the same function as the SysRq key on a conventional keyboard. • Fn + PgUp: Has the same function as the Home key on a conventional keyboard.
b a c Figure 7. Touch pad a Touch pad: To move the cursor on the screen, slide your fingertip over the touch pad in the direction in which you want the cursor to move. b Left-click button: Functions the same as the left button on a conventional mouse. c Right-click button: Functions the same as the right button on a conventional mouse.
Using the ac power adapter When you use ac power, the battery charges automatically. The ac power adapter that comes with your computer has two basic components: • The transformer pack that converts ac power for use with the computer. • The power cord that plugs into the ac outlet and into the transformer pack. Attention: Using an improper power cord could cause severe damage to the computer. Connecting the ac power adapter To connect the ac power adapter, do the following: 1.
Sleep mode If you are not going to use the computer for a short time, put the computer into sleep mode. When the computer is in sleep mode, you can wake it up to resume use and bypass the startup process. To put the computer into sleep mode, do the following: • Windows 7: 1. Click Start. 2. Click the triangle mark next to the Shut down icon, and then select Sleep. • Windows 8.1: 1. Move the cursor to the top-right or bottom-right corner of the screen to display the charms. 2. Click Settings. 3.
• Windows 8.1: 1. Move the cursor to the top-right or bottom-right corner of the screen to display the charms. 2. Click Settings. 3. Select Shut down from the Power menu options. Handling the battery This system does not support batteries that are not genuine Lenovo-made or authorized. The system will continue to boot, but might not charge unauthorized batteries.
DANGER Only recharge the battery pack strictly according to instructions included in the product documentation. DANGER Do not put the battery pack in trash that is disposed of in landfills. When disposing of the battery, comply with local ordinances or regulations and your company's safety standards. DANGER There is a danger of an explosion if the backup battery is incorrectly placed. The lithium battery contains lithium and can explode if it is not properly handled, or disposed of.
Establishing a wireless connection To establish a wireless connection, do the following: 1. Press Fn + F5 to turn on the wireless feature. 2. Click the wireless network connection status icon in the Windows notification area. A list of available wireless networks is displayed. 3. Double-click a network to connect to it. Provide required information if needed.
Chapter 3. You and your computer This chapter provides information about accessibility and comfort. Accessibility and comfort Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort. Arrange your workplace and the equipment you use to suit your individual needs and the kind of work that you perform. In addition, use healthy work habits to maximize your performance and comfort while using your computer.
Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position. Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to best suit your desired posture. Arm and hand position: If available, use chair arm rests or an area on your working surface to provide weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal) position. Type with a soft touch without pounding the keys.
Chapter 4. Security This chapter provides information about protecting your computer from theft and unauthorized use. Attaching a mechanical lock You can attach a mechanical lock to your computer to prevent it from being removed without your permission. Attach a mechanical lock to the keyhole of the computer; then secure the chain on the lock to a stationary object. Refer to the instructions shipped with the mechanical lock.
Chapter 5. Recovery overview This chapter provides information about the recovery solutions for your computer. • “Recovery solutions on the Windows 7 operating system” on page 22 • “Recovery solutions on the Windows 8.1 operating system” on page 23 Recovery solutions on the Windows 7 operating system It is important to create a rescue medium and a set of recovery media as early as possible and store them in a safe place for future use.
Reinstalling the Windows 7 operating system Attention: The recovery process is irreversible. Ensure that you have backed up your critical data before using the recovery feature. To reinstall the Windows 7 operating system, do the following: 1. Turn off the computer. 2. Start the computer. When the Lenovo logo is displayed, press F11 and then follow the on-screen instructions to open the Product Recovery program. 3. Follow the on-screen instructions to reinstall the operating system.
2. In the Refresh your PC without affecting your files section, click Get started. Then follow the onscreen instructions to refresh your computer. • Resetting your computer When you use the recovery program to reset your computer, all the data stored on the hard disk drive will be deleted and the computer will be restored to the factory default settings. Attention: To avoid data loss, back up your data in advance. To reset your computer, do the following: 1.
Chapter 6. Preventing problems An important part of owning a Lenovo notebook computer is maintenance. With proper care, you can avoid common problems. The chapter provides information that can help you keep your computer running smoothly. • “General tips for preventing problems” on page 25 • “Taking care of your computer” on page 25 General tips for preventing problems This topic provides general tips for you to prevent problems when using your computer. 1.
Be careful about where and how you work • Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage. • Store packing materials safely out of the reach of children to prevent the risk of suffocation from plastic bags. • Keep the computer more than 13 cm (5 inches) away from magnets, activated cellular phones, electrical appliances, or speakers. • Avoid subjecting your computer to extreme temperatures (below 5°C/41°F or above 35°C/95°F).
• When installing the hard disk drives or optical drives, follow the instructions shipped with your hardware, and apply pressure only where needed on the device. • Turn off your computer if you are replacing the hard disk drive. • Store your external and removable hard disk drives or optical drives in the appropriate containers or packaging when not in use. • Before you install any of the following devices, touch a metal table or a grounded metal object.
5. Wipe the display again; do not let any liquid drip into the computer. 6. Be sure to dry the display before closing it. Keep the following in mind: • Only an authorized Lenovo repair technician should disassemble and repair your computer. • Do not modify or tape the latches to keep the display open or closed.
Chapter 7. Troubleshooting computer problems This chapter provides information on what to do if you experience a problem with your computer. Troubleshooting This topic categorizes common computer problems and provides troubleshooting hints and tips. Battery and power problems This topic provides instructions on troubleshooting battery and power problems. Print these instructions first. The battery pack cannot be fully charged in the standard charge time when the computer is turned off.
A startup problem Print these instructions first. The Windows operating system does not start. Use the recovery program provided on your computer to identify and troubleshoot the problem. For details, refer to Chapter 5 “Recovery overview” on page 22. Sleep and hibernation problems Print these instructions first. A critical low-battery error occurs, and the computer immediately turns off. This indicates that the battery power is getting too low.
When I turn on the computer, nothing is displayed on the screen and the computer does not beep while starting up. Ensure that: • The battery is installed correctly. • The ac power adapter is connected to the computer and the power cord is plugged into a working electrical outlet. • Press the power button again to ensure that the computer is turned on. If the problem persists, contact your local Service Provider. When I turn on the computer, only a white cursor is displayed on a blank screen.
You hear a noise from the drive when the CD, DVD, or CD-RW disc is spinning. If the disc is not correctly loaded on the center pivot of the drive, it might rub against the drive cover and make a noise. Ensure that the disc is loaded correctly in the drive. The drive tray does not open even if you press the eject button. When your computer is not turned on, pressing the eject button does not cause the drive tray to open.
Other problems Print these instructions first. Your computer does not respond. Do either of the following: • Turn off your computer by pressing and holding the power button for four seconds or more. If the computer still does not respond, remove the ac power adapter and the battery. • Your computer might lock when it enters sleep mode during a communication operation. Disable the sleep timer when you are working on the network. The computer does not start from a device you want. Do the following: 1.
Appendix A. Regulatory information Wireless related information Wireless interoperability The Wireless LAN PCI Express Mini Card is designed to be interoperable with any wireless LAN product that is based on DSSS, CCK, and/or OFDM radio technology, and is compliant to: • The 802.11b/g Standard, 802.11a/b/g or 802.11n draft 2.0 on Wireless LANs, as defined and approved by the Institute of Electrical and Electronics Engineers. • The WiFi certification as defined by the Wi-Fi Alliance.
Usage environment and your health Integrated wireless cards emit radio frequency electromagnetic energy like other radio devices. However, the level of energy emitted is far much less than the electromagnetic energy emitted by wireless devices like for example mobile phones. Due to the fact that integrated wireless cards operate within the guidelines found in radio frequency safety standards and recommendations, Lenovo believes they are safe for use by consumers.
ENERGY STAR model information ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy aimed at saving money and protecting the environment through energy efficient products and practices. Lenovo is proud to offer our customers products with the ENERGY STAR qualified designation.
Appendix B. WEEE and recycling statements Lenovo encourages owners of information technology equipment to responsibly recycle their equipment when it is no longer needed. Lenovo offers a variety of programs and services to assist equipment owners in recycling their IT products. Information on product recycling offerings can be found on Lenovo's Internet site at http://www.lenovo.com/recycling.
Appendix C.
Appendix D. Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used.
Trademarks The following terms are trademarks of Lenovo in the United States, other countries, or both: Active Protection System Lenovo OneKey Microsoft and Windows are trademarks of the Microsoft group of companies. The following items are trademarks of Apple Inc., registered in the U.S. and other countries: iPod iPhone Other company, products, or service names may be trademarks or service marks of others.
Index A Active Protection System 21 B built-in microphone 2 C Camera 1, 11 Charging the battery 14 F fingerprint reader 21 Function key combinations 10 P password 21 S Security 21 Special keys 10 T Touch pad 2 © Copyright Lenovo 2013 41
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