Why cannot I find the DVD Driver on Win7?

The reason why the DVD Driver cannot be found on windows 7 is that more and more users are using windows 7. Of course, you will also encounter various problems when using windows 7. A common problem in Win7 is that the system prompts that the DVD Driver cannot be found, and the DVD drive is not recognized by the system. In the Device Manager, there is a problem with the data signature displayed by an exclamation point: "Windows cannot verify the data signature of this device ...... (Code52) "to completely solve the problem that the win7 system prompts that the DVD Driver cannot find the DVD drive which is not recognized by Windows 7, refer to the following method to download the ghost xp sp3 of windows 7 flagship version. Solution win7 system prompts that the DVD Driver cannot be found. Method 1: 1. Enter regedit in the Start menu and press Enter. Open Registry Editor 2. expand the following registration key HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass {4D36E965-E325-11CE-BFC1-08002BE10318} 3. in the right pane, right-click UpperFilters and click Delete. click "yes" to confirm the value deletion 5. also delete the value LowerFilters. Confirm to delete 6. Exit Registry Editor, and restart the computer company system to download tips: When you delete the above two values, you may lose some features, such as the CD record program. In this case, you must reinstall the affected program. If the problem persists, you may need to contact the program supplier to check whether the updated version of the program exists. Solution win7 system prompts that the DVD Driver cannot be found. Method 2: 1. click Start> All Programs> Attachment 2. right-click the command prompt and choose "Run as administrator". 3. paste the following command and press Enter: bcdedit/set loadoptions DDISABLE_INTEGRITY_CHECKS