Method 1: When the Error Message States the Computer Is Locked by domain\username. 1  Press CTRL+ALT+DELETE to unlock the computer. 2  Type the logon information for the last logged on user, and then click OK. 3  When the Unlock Computer dialog box disappears, press CTRL+ALT+DELETE and log on normally.
Halley's comet returns in bits and pieces. Shooting stars should be visible October 21st & 22nd. October 20, 1998: The last time Halley's comet visited Earth, in 1986, many observers were disappointed because the famous comet was barely visible to the naked eye.
At its closest point (perihelion), the comet is only 88 million kilometers from the Sun (about 60% of the Earth's distance from our star.) At its most distant point (aphelion), Halley is 5.2 billion kilometers from the Sun and thus beyond the orbit of Neptune.