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 drive? Win7 refused the DVD drive, CD 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:
DVD drive is not recognized by the system, just an exclamation point in the device manager shows that there is a problem with the data signature:
“Windows cannot verify the data signature of this device ……(Code52) ”
Solution 1:
1. Enter 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 and click Delete
4. Click & rdquo; Yes & rdquo; Confirm the value to delete
5. Also delete the LowerFilters value. Confirm delete
6. Exit the registry editor, and then 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.
Understanding the above solutions, we can recognize that the win7 system refuses the status of the DVD drive, in fact, it is not the problem of the CD drive being broken, but the problem of the win7 system itself, as long as the relevant settings are made in the system. Operational problems can be solved.