Win7 system quickly recognizes two cheats of DVD drive

win7 refused the DVD drive, the driver knows? Win7 refused the DVD drive, is it abandon the CD-ROM? Win7 refused the DVD drive, CD-ROM drive you understand? Is the problem of the DVD drive? Or the problem of the win7 system? Users Do you know? If you don't know, let's take a look.

Phenomenon:

The DVD drive is not recognized by the system. It is just an exclamation point in the device manager. The data signature is problematic:

“Windows cannot verify the device. Data Signature ……(Code52)”

Solution One:

1. Type regedit in the Start menu and press Enter. Open the Registry Editor

2. Expand the following registration key

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

3. In the right panel, right click UpperFilters, click delete

4. Click & rdquo; Yes & rdquo; Confirm Value Delete

5. Also delete the LowerFilters value. Confirm Delete

6. Exit the Registry Editor and restart

Note: When you delete the above two values, you may lose some features, such as CD Recorder. If this happens, you must reinstall the affected program. If the problem persists, you may need to contact the program vendor to see if there is an updated version of this program.

Solution 2:

1. Click Start - All Programs - Accessories

2. Right-click on the command prompt - & rdquo; Run as administrator & rdquo;

3. Paste the following command and press Enter:

bcdedit/setloadoptionsDDISABLE_INTEGRITY_CHECKS.

After understanding the above solutions, we can realize that the win7 system refuses the status of the DVD drive, but it is not the problem of the CD drive being broken, but the problem of the win7 system itself, as long as it is carried out in the system. The related setup operation problems can be solved.