Realtek RT640 NT Driver (rt640x86) Service Defaults in Windows 10

Realtek 8136/8168/8169 NDIS 6.40 32-bit Driver by Realtek.

The Realtek RT640 NT Driver service exists only in:

Default Settings

Startup type: Manual
Display name:Realtek RT640 NT Driver
Service name:rt640x86
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rt640x86

Default Behavior

Realtek RT640 NT Driver is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If Realtek RT640 NT Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the rt640x86 service has failed to start due to the error.

Restore Default Startup Configuration of Realtek RT640 NT Driver

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config rt640x86 start= demand

3. Close the command window and restart the computer.

The rt640x86 service is using the rt640x86.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.