Lenovo B345, B540p, B545, B340 manual Troubleshooting Problems with Optical Drives and Hard Disks

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Troubleshooting Problems with Optical Drives and Hard Disks

Problem: The Optical drive is unable to read a CD/DVD.

Troubleshooting and problem resolution:

1.Check to determine if there is an optical drive icon in the resource manager of the operating system. If not, restart your computer. If there is still no icon, contact Lenovo Service. Otherwise, continue with the next step of this procedure.

2.Confirm that the CD/DVD has been properly placed in the drive. If not, reload the CD or DVD. Otherwise, continue with the next step of this procedure.

3.Check the specifications that came with your computer to confirm that this optical drive is capable of reading this type of CD or DVD.

4.If the CD/DVD cannot be read, replace it with a known good CD/DVD such as one that was shipped with the computer.

5.If the known good CD cannot be read, visually check the operating side of the CD/DVD for defects.

Problem: The capacity of the hard disk, as indicated by the system, is less than the nominal capacity.

Troubleshooting and problem resolution: For computers equipped with the OneKey Recovery feature, the system recovery feature needs to occupy some hard disk space. This may account for the apparent hard disk capacity deficit.

Further Technical Explanation: The nominal capacity of the hard disk is expressed in the decimal system as 1000 bytes. But the actual hard disk capacity is expressed in the binary system as 1024 bytes (For example, the nominal capacity 1G is 1000M, while the actual capacity 1G is 1024M).

The capacity of the hard disk shown in Windows can be calculated according to the calculations in the following example:

The nominal capacity of the hard disk is 40G, while its actual capacity should be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37G.

If the Service partition of 3G - 3 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 2.79G is subtracted, the capacity of the hard disk shown in the system can be obtained.

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Contents Lenovo Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the computer Left and right view of the computer Rear view of the computer TV button instructions selected models only Computer stand Connecting your computer Basic connector instructionsImportant information about using the computer Connecting the power cordHold the computer tightly when you carry it Wired keyboard selected models only Connecting to the InternetUsing Windows Switching between the main Windows 8 interfaces Switching between appsCharms Bar Shutting down the computerClosing an app Opening other system programsWindows Help and Support User Guide Touch screen instructions  Touch Screen CalibrationTouch Screen Calibration User Gesture Instructions for the Touch screenBasic Hand Gestures User Guide User Guide Related Touch Screen Settings Precautions when using the Touch Screen User Guide Using the Onekey TV selected models only To turn on the Onekey TV To turn on the computerGuide to the remote control selected models only Picture Viewing information. Press again to TV Tuner cards Language settings Onekey TV Instructions Astc model selected models onlyScan for channels Picture In Picture PIP Size Record TVOnekey TV Instructions DVB-T model selected models only Language settings Password settings Onekey TV Instructions ATV model selected models only Language settings Using the Rescue System OneKey Recovery Driver and Application Installation Method 1 Automatic InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Solving Problems Troubleshooting Display ProblemsTroubleshooting Touch screen Troubleshooting Audio ProblemsTroubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows Bios setup utility When do I need to change the boot mode?Performing Daily Maintenance Tasks Hardware Replacement Guide Safety information for replacing CRUs OverviewAdditional information resources Tools requiredHandling static-sensitive devices Replacing hardware General informationRemoving the computer cover To install a Vesa wall mount Mounting the computer onto a wallUser Guide Installing a B-CAS card Replacing a memory module Replacing the optical drive To remove the optical driveUser Guide Replacing the hard disk drive To replace the hard disk driveUser Guide Replacing the keyboard and the mouse To replace the keyboardReplacing the power cord To replace the power cordAppendix DeclarationTrademarks Energy Star Statement 10097/2566 10099/2568 10101/3363 10098/2567 10100/4749Enabling ErP compliance mode User Guide
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10099/2568 [B540], 10098/2567, 10098/2567 [B345], 10101/3363, 10097/2566 [B340] specifications

Lenovo has made significant strides in the competitive landscape of portable computing with its B345, B545, and other models, including the key identifiers 10097/2566, 10100/4749, and 10099/2568. These laptops are designed to cater to professionals and students seeking a reliable device with robust performance and essential features.

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