What if the optical drive is gone?

Will you encounter the optical drive missing? The optical drive icon is gone, the system properties can not see it, how to do? My Computer does not find an optical drive or a burner icon, usually because of the driver of the optical drive or burner damaged, the optical drive or burner and computer contact is bad. Here's how to solve this problem.

The optical drive is missing from my computer.

Why the computer's optical drive is missing, the computer's optical drive is gone. The result is not even a reload system, because the optical drive cannot read the disk. Its LEDs are not lit either. What is a hardware failure or a software failure?

　　I. Software-related reasons

1. IDE driver installation error or conflict with a driver

If we install Windows without installing the IDE driver properly, or if you see a yellow exclamation mark when you turn on Device Manager to view the "hard disk controller" When you install it, the drive letter of the time drive may not be found.

Under normal circumstances, when we enter a secure form, the drive letter of the CD-ROM is not available. If we want to use the optical drive in a secure form, we can load the drive in the Autoexec.bat and Config.sys files so that we can use the optical drive in a secure form after restarting the computer.

2, config file set lastdrive number set too little

If we were in config. SYS file, "lastdrive=?" is set in the is too small to be smaller than the actual number of drives, and even though we have the optical drive installed, I can't see the optical drive shadow in My computer. Just remove the setting or set it to "Lastdrive=z".

3. Improper DMA Setup

If the optical drive supports only the PIO4 standard and does not support the DMA/33 standard, we force the light to use this standard ("√" before DMA in the "Settings" option in the CD-ROM "CDROM" attribute in the "My Computer" property "Device Manager"). This can sometimes cause the optical drive to lose, sometimes can cause the computer not to start normally. At this point we can enter the security form, the CDROM property in the DMA settings can be removed. We use the hard drive or the optical drive to fully support what kind of data transmission form, we are in the computer startup process of the second screen in the Basic configuration table can be seen.

4, the optical drive in the registration table was malicious shielding off

The binary value of the "Nodrivers" in "My Electric Hkey_current_user/software/microsoft/windows/currentvrsion/polices/xplorer" is not the value of the optical drive. It is not normally available, and the value can be changed to "00 00 00 00" (01 00 00 00 to a,04 00 00 to 00 for the C,FF FF FF as the hidden all drives).

Note that some viruses are now specifically changing the registry to make the drive letter missing. Some viruses will not cause the CD-ROM drive to lose, but will prohibit the CD drive read disk, what kind of CD can not read, but can be started with the CD-ROM.

5, the optical drive is not installed correctly

The drive is usually brought in windows with the drive, and no additional additions are required. If the driver of the optical drive is not installed with its own driver, there will also be a loss of the optical drive. The appearance of this situation is generally the addition of the so-called "optimization", "accelerator" or other procedures. You can enter the security form to remove the "CDROM" option in Device Manager, and then restart your computer to allow the system to discover new hardware to reinstall the drive.

6, CMOS set improper

If the transmission form is incorrectly set in the CMOS settings-the Lao drive that does not support Pio MODE3 or Pio MODE4 or DMA/33 will appear in Windows without an optical drive icon and no optical drive is available. Just enter the "Integrated Peripherais" entry in the CMOS and change "IDE PRIMARY MASTER PIO (or UDMA)" and "IDE PRIMARY SLAVE Pio (or UDMA)" to "AUTO".

7. Improper use of virtual optical drive

Virtual CD-ROM can avoid the frequent reading of discs, improve the speed of reading, for our convenient to play the CD game provides a possibility. But sometimes when we do not want to use the virtual optical drive program, want to uninstall it or want to install the latest program, but there are accidents, virtual CD-ROM disk have, the actual CD drive letter is lost.

　Two. Hardware-related reasons

1, data line connection or data line damage

When the optical drive is lost, you should first check the optical drive data cable is not connected to the reverse, is not loose. If there is no fault in the other place, and the data cable of the optical drive is often moved, then a data line should be replaced for a try.

2, jumper settings and hard drive conflict

When the optical drive jumper and on the same data line connected to the same hard drive will appear to be unable to find the optical drive (or may not have a hard drive), as long as the optical drive jumper jump and hard drive is not the same. In order to improve data transmission rate, it is best to separate the hard drive and the optical drive on the two IDE interfaces.

3, power line failure, the lack of 5V voltage or 5V voltage supply is not normal

This situation does not appear much. Because we are in the CD-ROM drive or the hard drive is too large, so that the power of the D-type plug loose or because the computer working environment bad plug oxidation rust, optical drive power supply is not very normal, the optical drive will also find.

4, IDE interface damage

If the CD-ROM drive is suddenly missing and cannot use the optical drive, then we can swap the optical drive and the hard drive interface. If you can find the optical drive again after starting again, but can not find the hard drive, which is the original optical drive to the IDE interface is damaged, if the switch after the computer will be able to start normally, but still do not have an optical drive, which illustrates that the optical drive itself, resulting in the loss of the optical drive letter, you can only replace the optical drive.

If there is no optical drive in Windows, we can also in DOS (restart the computer after the F8 into the DOS, rather than WIN98 under the Dos) With Windows Universal drive Ide.sys to try to load the CD-ROM drive, if it can be loaded successfully, clarify the reasons for the software, should be mainly from the software to find out why. Otherwise, it should be considered from the hardware side.

Computer Management

　　Three. Solution to the optical drive missing:

Method One:

1. In the Start menu, enter regedit, carriage return. Open Registry Editor

2. Expand the following registry key

HKEY_LOCAL_MACHINESYSTEMCURRENTCONTROLSETCONTROLCLASS{4D36E965-E325-11CE-BFC1-08002BE10318}

3. On the right side of the panel, right click on upperfilters, click Delete

4. Click "Yes" to confirm the value deletion

5. Also delete the LowerFilters value. Confirm deletion of 6. Quit Registry Editor, and then reboot

Note: When you delete the top two values, you may lose some functionality, such as a CD recorder. If this happens, the affected program must be reinstalled. If the problem persists, you may need to contact the program vendor for an updated version of the program.

Method Two:

1. Click Start-> All Programs-> Accessories

2. Right-click the command prompt-> "Run as Administrator"

3. Paste the following command and enter:

Bcdedit/set loadoptions Ddisable_integrity_checks