When page fault happens in virtual memory management, what is the steps of OS to handle this situation?

A page error is an interrupt that occurs when the software attempts to read or write to a virtual memory location marked as not present. Page errors record the number of times a process must recover from the hard disk.

In task manager, page errors are the number of times in a process that data must be retrieved from disk when it is not in memory. Page error values are accumulated from the time the process started.