Taming Spikey

One of your customers is complaining that their Windows 7 computer slows down to a crawl at random times during the day. You’d like to examine the computer when this problem is happening, but you never seem to be around when the slowdown is active. Which of these Windows utilities would be the best to use for gathering long-term operating system metrics when these problems happen again?

A) Task Manager

B) Computer Management

C) Event Viewer

D) Performance Monitor

E) One of those face-recognition webcams that detect when someone is frowning