Lenovo 10093, H520S, H505S, 57312710 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.

User Guide 23

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Contents H5s Series Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the chassis Rear view of the chassis User Guide Connecting your computer Basic connector instructions Connector Description MicrophoneAudio configuration instructions Connecting the power cord How to play Blu-ray Discs selected models only Wired keyboard selected models onlyConnecting to the Internet Using Windows Switching between the main Windows 8 interfaces Switching between appsCharms Bar Shutting down the computerOpening other system programs Closing an appWindows Help and Support User Guide Using the Rescue System OneKey Recovery Method 1 Automatic Installation Driver and Application InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Solving Problems Troubleshooting Display ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows Bios setup utility Performing Daily Maintenance TasksUser Guide Hardware Replacement Guide Safety information for replacing CRUs OverviewAdditional information resources Tools requiredLocations Locating components and connectorsHandling static-sensitive devices Internal components Power supply Identifying parts on the system board Microprocessor and heat sink Memory slots Pre-disassembly instructions Replacing hardwareGeneral information Removing the computer coverUser Guide Removing the front bezel To remove the front bezelReplacing an optical drive To replace an optical driveUser Guide Replacing the hard disk drive To replace the hard disk driveReplacing a memory module To replace a memory module Completing the installation To complete the part installationReplacing the keyboard and the mouse To replace the keyboardUser Guide Appendix DeclarationTrademarks Energy Star Statement 4746 3230Enabling ErP compliance mode
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57312710, 31502552, 3230, 2561, 57311365 specifications

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