NT 1110 Unit 7 Video Summary 5 - Matthew H Almour NT1110 Tuesday 6 PM Professor Morgan 1 Video Clip 1.01 The video teaches us about BIOS BIOS is the

NT 1110 Unit 7 Video Summary 5 - Matthew H Almour NT1110...

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Matthew H Almour NT1110, Tuesday 6 PM Professor Morgan June 21, 2016 1. Video Clip 1.01: The video teaches us about BIOS. BIOS is the first program activated during boot. It is ROM (Read Only memory), permanent, cannot be edited, and doesn’t require power to maintain content. The startup BIOS activates the bootstrap loader, which runs POST (Power-on Self Test). POST checks basic system hardware, checks memory, and assigns system resources. The startup BIOS checks CMOS and compares them to the hardware found during POST. CMOS settings are stored in RAM (Random Access Memory), therefore are not permanent and may be changed. Although CMOS is stored in RAM, it has its own CMOS battery that provides power during shutdown and preserves the CMOS configuration. If the battery dies, the CMOS configurations will be lost. The most common symptom of a dying battery is a slow clock if the battery is low and checksum error during boot if the battery is dead. If the checksum error is displayed, clear the error and the system will boot using the settings stored
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  • Spring '14
  • Professor Morgan, Device Manager, hardware device, IRQ

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