Some Windows XP installations show a peculiar defect in that some systray icons disappear or, rather, do not appear, when the system is booted and the user logs on. The problem is even more prevalent on systems with autologon. The most frequently affected icons seem to be the speaker icon (sound volume) and the power/energy icon. This has nothing to do with the hide inactive icons settings. The defect shows up when you don't have any icons set for to be hidden. Microsoft has not taken notice. The causes are obscure. Some users report successes with various changes that influence the boot and logon timing, but these changes do not reliably solve the problem. Often they make the problem occur less often though and make it bearable. TrayIconsOK is a utility that completely solves this problem by delaying desktop loading on XP during startup.