Lenovo B41 30 B41 35 B51 30 And B51 35 Laptop User Guide
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25 Chapter 4. Troubleshooting Frequently asked questions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This section lists frequently asked questions by category. „Finding information What safety precautions should I follow when using my computer? The Lenovo Safety and General Information Guide contains safety precautions for using your computer. Read and follow all the precautions when using your computer....
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26 Chapter 4. Troubleshooting „Lenovo OneKey Recovery system Where are the recovery discs? Your computer did not come with recovery discs. Use the recovery system if you need to restore the system to its factory status. What can I do if the back-up process fails? If you can start the backup but it fails during the back-up process, try the following steps: 1Close all open programs, and then restart the back-up process. 2Check to see if the destination media is damaged. Select another path and then try...
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Chapter 4. Troubleshooting 27 When do I need to change the boot priority? The default boot priorities are UEFI First. If you need to install a legacy operating system (that is, an earlier version than that of your current operating system) on your computer, you will need to change the boot priority to Legacy First. The legacy operating system cannot be installed if you do not change the boot priority. „Getting help How can I contact the customer support center? See “Chapter 3. Getting help and...
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28 Chapter 4. Troubleshooting Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Display problems When I turn on the computer, nothing appears on the screen. • If the screen is blank, make sure that: - The AC power adapter is connected to the computer, and the power cord is plugged into a working electrical outlet. - The computer power...
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Chapter 4. Troubleshooting 29 BIOS password problems I forgot my password.• If you forget your user password, you must ask the system administrator to reset your user password. • 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...
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30 Chapter 4. Troubleshooting Sound problems No sound can be heard from the speakers even when the volume is turned up.•Make sure that: - The mute function is off. - The combo audio jack is not used. - The speakers are selected as the playback device. Battery problems Your computer shuts down before the power and battery status indicator shows empty. -or- Your computer operates after the power and battery status indicator shows empty. • Reset the battery gauge using OneKey Optimizer. If the...
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Chapter 4. Troubleshooting 31 Other problems Your computer does not respond.• To turn off your computer, press and hold the power button for 4 seconds or more. If the computer still does not respond, remove the battery pack and the AC power adapter. • 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.• See the EFI list of the BIOS setup utility. Make...
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32 Appendix A. CRU instructions Customer Replaceable Units (CRUs) are parts that can be upgraded or replaced by the customer. If a CRU is determined to be defective during the warranty period, a replacement CRU will be provided to the customer. Customers are responsible for installing the self-service CRUs for this product. Customers also can install optional-service CRUs, which might require some technical skills or tools, or request that a technician install the optional-service CRU under the...
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Appendix A. CRU instructions 33 Replacing the battery pack - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - To replace the battery pack, do the following: 1Unlock the manual battery latch . While holding the spring-loaded battery latch in the unlocked position , remove the battery pack in the direction shown by the arrow . 2Install a fully charged battery pack. 3Slide the manual battery latch to the locked position. Note:...
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34 Appendix A. CRU instructions Replacing the hard disk drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - You can increase the storage capacity of your computer by replacing the hard disk drive with one of greater capacity. You can purchase a new hard disk drive from your reseller or Lenovo marketing representative. The hard disk drive is very sensitive. Incorrect handling can cause damage and permanent loss of data on the hard disk....