Security Processor Loader Driver (spldr) Service Defaults in Windows 7

Default Settings

Startup type:Boot
Display name:Security Processor Loader Driver
Service name:spldr
Service type:kernel
Error control:critical
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\spldr

Default Behavior

Security Processor Loader Driver is a kernel device driver. In Windows 7 it is being loaded by Boot Loader before Kernel initialization. If Security Processor Loader Driver fails to load, Windows 7 attempts to write the error data into Event Log and restart the computer, using the Last Known Good configuration. If the Last Known Good configuration is not valid, Windows 7 startup ends with a Stop error. If you remove or disable the spldr service, Windows 7 won't start.

Restore Default Startup Configuration for Security Processor Loader Driver

1. Run the Command Prompt as an administrator.

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

sc config spldr start= boot
sc start spldr

3. Close the command window and restart the computer.