When you start a portable Windows Vista-based computer that has the lid closed, you may receive a Stop error message that resembles the following:

STOP: 0×0000000A (parameter1, parameter2, parameter3, parameter4)
IRQL_NOT_LESS_OR_EQUAL

Note: This problem also occurs when you restart a portable Windows Vista-based computer that has the lid closed.

For example, this problem may occur if you have an external monitor or TV connected to the portable computer. In this scenario, the portable computer lid may be closed when you start the computer.