A word about Windows
Windows is a versatile, powerful tool. Unfortunately, like all complex tools, it can be frustratingly delicate.
The most common problem is the dreaded GPF or General Protection Fault. This is usually created by a memory conflict and its likelihood for appearing is reduced by having plenty of memory available. Close as many other programs as possible when using Nspector.
If you get a GPF you often have no choice but to close windows and restart.