1. A+ Hardware Section 1.2 BIOS and CMOS Made By : Gagandeep Singh

2. What you learn today CompTIA A+ 220-701 , Section 1.2, Explain motherboard components, types and features. BIOS/CMOS/Firmware. - POST - CMOS battery.

3. What you learn today Basic Input Output System (BIOS) overview. Complementary metal-oxide semiconductor (CMOS). Accessing the CMOS settings from the BIOS software.

4. Starting the computer Everything has to talk to computer - Keyboard language translation. - Monitor language translation. - Hard drive language translation. - CD-ROM drive language translation. If only there was some basic system for communicating between diverse components.

5. The CMOS Complementary Metal Oxide Semiconductor (CMOS). - The type of memory. Backed up with a battery. - What’s the date and time settings. Stores the BIOS and configuration details. Doesn’t need to be very big - 128 bytes of content. - Integrated into the Southbridge.

6. BIOS Basic Input Output System (BIOS). - The Firmware (software) It is software that tell which monitor and components are attached to computer. Every PC has a BIOS ROM.

7. The CMOS battery Maintains the BIOS configurations. A bad battery will require a BIOS configuration on every boot. Can often reset the BIOS configuration by removing the battery.

8. Configuring the BIOS

9. The secret button Launching the system setup - Delete - F2 - Ctrl-s - Ctrl-Alt-S

10. POST

11. POST (Power on Self Test) Test major system components before booting the operating system. - Main System - Video - Memory Failures are usually noted with beeps or codes.