The battery can go flat, the data in the CMOS can be lost by a static electric discharge to the keyboard, or the data can be lost when a new card is plugged into the Bus, or other inside modifications are performed. The information stored in CMOS is required by your computer's Basic Input/Output System, or BIOS. The system BIOS is stored in a 64K by 8 bit wide ROM on the System Board. If the System BIOS was actually accessed from this ROM during normal operation the PC's speed would be greatly reduced.
The Forge of Souls (52.5, 89.4) is the first wing of the Frozen Halls instances in Icecrown Citadel, released in patch 3.3. The Forge is a massive production facility that builds Soul Grinders, the latest foul construct in the Lich King's arsenal. Lore.
The black demons in the Chaos Tunnels are located in the north-western section, in a room connected to the dust devils to the south, and earth warriors and bronze dragons to the west. The closest entrance to the black demons is the level 6 entrance into the gargoyle chamber.