DVD drive self-report: Why does Win7 refuse me thousands of miles away?

DVD drive, perhaps most users are not very familiar with it, in our Win7 system use, if there is a problem with the CD-ROM, it will display "ldquo; Windows can't verify the data signature of this device ……(Code52)", this is the case where the DVD drive was rejected by Win7. However, for Win7, the optical drive will be rejected thousands of miles away, and the optical drive will continue to be like Win7 as it was first love. Is there any way to make Win7 not exclude the optical drive? Let's discuss it together.

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 the above explanation, from the phenomenon of rejection and two solutions, everyone will know why Win7 will reject the optical drive. In fact, it is not a problem that the CD-ROM drive is broken, but the problem of the win7 system itself. As long as the related setting operation problems in the system can be solved.