How do I get the missing Windows 7 system drive?

First, most of the time, our computer's optical drive is missing, may be due to the driver installation is not normal cause, we usually in the Device Manager, will see the optical drive device, but it will have an exclamation point, at this time we download the corresponding CD-ROM drive can be resolved.

Second, for friends recently encountered this, in the device management can not find the optical drive device, usually only two possible:

1, the optical drive is broken or the internal optical drive cable loose;

For this situation, my friend here can be ruled out, so the optical drive in the XP system is good, can not change a Win7 system CD-ROM is broken, before it can be used, indicating that the internal connection is no problem.

2, Win7 on AHCI, optical drive is not compatible with AHCI

>>. What is AHCI the AHCI mode?

This situation should be the author friend encountered, through the modification of the registry, unexpectedly resolved, here specifically with the introduction.

First, use the combination shortcut Win + R to open the start of the dialog box, and then open the following type: Regedit command, finished click on the bottom of the confirmation can open Registry Editor.

Open Registry Editor Method

After you enter Registry Editor, expand in sequence:

HKEY_LOCAL_MACHINE--SYSTEM--CURRENTCONTROLSET--CONTROL--CLASS--{4D36E965-E325-11CE-BFC1-08002BE10318}, as shown in the following illustration:

As above, click to enter {4D36E965-E325-11CE-BFC1-08002BE10318} This registry value, we in its right to the specific value, find UpperFilters, LowerFilters, delete it, as shown in the following figure:

Win7 Optical drive is missing

After the above steps are completed, we close the Registry Editor, and then restart the computer, after restarting the computer, usually go into Device Manager to see the optical drive device.