A memory leak refers to a programming bug where an application program repeatedly allocates virtual memory, but never deletes it. Eventually, a program with a memory leak will cause something bad to happen. For example, the system or some of its applications might lock up because all the available virtual memory is allocated.
Several aspects of [...]

It is not possible to get a complete accounting of RAM usage on a Windows, but you can get reasonably close. RAM usage by various OS functions is measured by the following five Memory Object counters:
Pool Nonpaged Bytes: these represent allocations directed to the nonpaged pool, which is a set virtual memory pages that always [...]

You are probably looking at the Page Faults/sec Counter and interpreting it as the rate of demand paging. Not entirely. In Windows Server, the Page Faults/sec counter includes both hard and soft page faults. (It also appears to include Cache faults/sec, which are application-related file cache read misses.) Instead of using the Page Faults/sec counter [...]