If you recently updated your computer, it is possible that the EndpointLock was scanning the kernel for unknown drivers during the update, leading to a false positive. Please try restarting your computer and see if the error message reappears when EndpointLock starts. If no message appears then your computer is secure, and no further action is needed. If the message does reappear please follow the steps below.
Find the driver file in %systemroot%\system32\drivers (usually with a “.sys” suffix. e.g. \Driver\Ps2 = Ps2.sys), scan it with your anti-virus program and research it on the internet with sites like Virus Total.