CompTIA A+ Certification (Part1 of 2)

Upgrade your BIOS by flashing firmware to apply security patches and fix bugs. Improve performance and enable support for new components.

Discover how the BIOS resides in read-only memory on system boards, adapter cards, and components. Read the chip printing and consult the manufacturer schematic, as ROM locations vary by board.

Run the power-on self-test to verify hardware components, including the processor, memory, IO controllers, and buses, and prepare the system to boot with plug-and-play awareness.

Navigate the bios setup with arrow keys and enter to change options, then save with f10 or restore defaults, or exit without saving using escape.

Configure bios monitoring to track temperatures, fan rpm, voltage, clock, and bus speeds, and use intrusion sensors for lid removal alerts to ensure compatibility and performance.

Learn how the bios, a firmware in a read-only memory module, keeps the instruction set without power and evolves from unchangeable designs to erasable prom and flashing.

Explore BIOS components and configurations, including checking RAM health, managing RAM size, setting boot order for hard drives and optical drives, and viewing CPU information.

learn to monitor internal components using bios data and third‑party tools such as hardware monitor, speed fan, and CPU-Z to check CPU temps, clocks, cache, memory, and motherboard status.

Install and run HWMonitor as administrator to view voltages, temperatures, fan speeds, and clock speeds, and save monitoring data or check for updates.

Monitor internal components by tracking temperature, voltage, and clock speeds; manage fan speeds with speed fan; consult cpq world dot com and motherboard documentation for memory and bus speeds.

Explore motherboard form factors from ATX to micro ATX and Mini ITX, highlighting case compatibility, IO improvements, and smaller, power-efficient designs developed by VIA Technologies.

Explore the system unit, memory and storage, display and input devices, and external peripherals, then compare tower types and placement considerations for heat, ventilation, and performance.

Provide the heart of the computer by hosting memory, the CPU, cooling fans, and built-in or expandable components such as video and network interfaces.

Understand ram slots and memory module types, including sim, dimm, and rambus modules, their data paths, and the requirement to pair modules in older systems.

Understand how chipsets determine chip placement on the board and why most chips are not removable.

Locate the CMOS battery on the motherboard and replace it. Ground with an ESD strap, discharge static by holding the power button for 10 seconds, then reseat the battery.

Learn about AMD CPU socket types, from the 940 family to F1, including variants like 940 with DDR, 2+, 3, and 83 plus, and their supported processors.

Evaluate cpu options for compatibility with motherboard form factors, compare pros and cons of chips that fit the same socket, and weigh speed versus price.

Identify key factors in cooling system selection for processors, including cooling needs, case fit, multiple cooling systems, appropriate fan size, and powering the fans.

Explore expansion slots such as PCI, PCI-X, PCI Express, mini PCI, CNR, and AGP, and see how bus mastering and interrupts enable multiple devices on one bus.

Learn how riser cards extend a motherboard by rising above the board to add more adapter slots, allowing slots to extend upward rather than connect directly to the motherboard.

Explore a 2U PCIe expansion riser card that adds PCI and PCIe slots in a rack-mounted server, with a power connector for up to three devices.

Learn how motherboard fans dissipate heat and how to identify three-pin vs. four-pin connectors to choose the right fan that provides the necessary electrical power.

Watch a live demo of installing a processor, connecting it to the motherboard, and securing cooling fins and a fan, while emphasizing anti-static precautions and proper pin alignment.

Explore bus speeds and how fast data moves from the processor to memory and expansion cards, and how motherboard, processor type, and memory type affect performance and cost.

Discover how to connect power to the motherboard with notched connectors that prevent wrong insertion, and verify that your power supply includes the correct motherboard power connectors.

Check the manufacturer's requirements for the motherboard to ensure compatibility with your case and mounting options. Verify the board fits your case and secures properly to prevent movement.

Explore a modern motherboard with memory slots, a CMOS battery, five SATA drives for RAID 0/1/5/10, PCIe slots, and processor installation basics.

Trace the CPU evolution from 16-bit to 64-bit designs, explore multicore and dual-core configurations, and explain how sockets, pins, and multi-threading influence performance and maintenance.

Demonstrates the exterior and interior of a computer, including the power supply, off switch, unplugging, residual voltage discharge, ports, expansion slots, and cooling.

Open the front door to inspect a well-ventilated computer front, observe the absence of CD-ROM, floppy, and USB slots, and see how interior bays and a DVD reside inside.

Examine how to safely open a computer case, expose airflow, identify internal components like fans and power connections, and use anti-static precautions.

Learn how memory affects system performance, from volatile RAM to nonvolatile memory. Explore how virtual memory, page swapping, and read-only memory and POST influence boot and device operation.

Explore how a RAM module is a printed circuit board that houses memory chips forming a single memory unit, is replaceable, plugs into motherboard memory slots, and is not hot-swappable.

Explore RAM configurations and how single, double, triple, and quadruple channels affect memory transfer. Learn that more channels enable faster access to information stored in memory and on the motherboard.

Discover how parity uses a single bit per byte, counting ones to enforce even or odd parity. It detects data corruption and reports mismatches.

Assess memory options by verifying motherboard compatibility, determining supported memory capacity, current memory speed and bus speed, and ensuring proper pairing, connector size, and module length.

Explore computer ports, including serial, parallel, USB, firewire, and display ports, and learn how data speed and pin connectors influence peripheral connections and Blu-ray from a PC to a monitor.

Learn parallel connections in CompTIA A+ context using a 25-pin port to connect printers and scanners, enabling daisy-chaining of devices to a single cable and the computer.

Learn about universal serial bus connections, powered hubs, type a and type b connectors, and USB evolution from 1.1 to 3, supporting up to 127 devices with faster speeds.

Learn about IEEE 1394, or FireWire, a faster, lower-power connection that surpasses USB speeds up to 400 megabits per second and is ideal for cameras and high-definition data.

Connect and manage scuzzy devices by daisy chaining up to 15 units using a scuzzy bus controller adapter card, linking internal and external devices with appropriate cables.

Learn about PATA connections, a parallel cable interface for hard drives, including 40- or 80-pin ribbons, power from the supply, and the system board port for data transfer.

Explore SATA connections and legacy IDE concepts like master and slave, bus stops, and cable select, plus how drives attach to controllers with proper power requirements.

Explore display cable and connector types across analog and digital interfaces, including composite video, s-video, component rgb, coax, bnc, dvi, hdmi, mini hdmi, displayport, and rca.

Explore single-core shielded cables and two-pair shielded cables, and how shielding reduces interference and crosstalk in unbalanced and balanced audio. Also review TS and TRS connectors used with unbalanced audio.

Compare analog and digital signals, showing how electromagnetic interference can distort copper wire transmission, while digital converters reconstruct the signal to reduce noise and enable faster data transfer.

Explore front panel connectors and headers, including usb ports, audio, and status lights, and learn how they link to the motherboard and indicate power and hard drive activity.

Demonstrate USB type A and type B connectors, showing which side plugs into the computer versus the device, and common uses from printers to smartphones and cameras.

Install a network, firewire, or thunderbolt card in a PCIe slot. Power down, unplug, ground with anti-static precautions; snap in, secure with the screw, and note possible drivers.

Explore modem cards, wireless cards, TV tuner cards, and video capture cards and learn how to install PCI/PCIe devices internal versus external, plug-and-play, open ports, and driver considerations.

Examine a cd/dvd combo drive’s front features, including the lcd activity indicator and emergency eject hole, and review its rear panel power, 39-pin ide interface, digital and analog audio connectors.

Leverage optical drives to read and write different types of optical disks, ensuring your PC supports the necessary read and write functionality for modern systems.

Explore optical disks, including cds, dvds, and blu-ray, with read-only, write-once, and write/read capabilities, minus r and plus r, dual-layer storage, and the historical shift from floppy disks.

Explore the different drive types, such as PATA, SATA, and SCSI, and how cable connections and versions affect drive counts and transfer rates as technology improves.

Solid state storage eliminates moving parts to store vast data in a smaller space, enabling compact devices like netbooks, smartphones, tablets, and cameras via built-in or external readers.

Explore solid state drives and variants like internal, external, compact flash, sd cards; learn how capacity and access methods affect speed and the role of onboard flash memory drivers.

Explore raid standards including raid 0 striping for speed, raid 1 mirroring for redundancy, raid 5 parity for fault tolerance, and raid 10 as a raid 1 and 0 combination.

Ask whether to use internal or external storage and ensure a case mount kept flat to avoid gravity effects on the read/write head. Verify power, data cables, drivers, and controllers.

Explore how to connect external storage by choosing the right interfaces, such as USB, FireWire, or SCSI, and ensure you have the correct cables and power supply.

Explore Windows Task Manager in Windows 10 to monitor processes and hardware metrics like CPU, memory, disk, and network. Analyze performance graphs to troubleshoot slow machines and startup issues.

Explore the history of USB from USB 1.0 to 3.1 and compare speeds from 480 megabits to 10 gigabits. See why fast transfers matter for large data and bootable installations.

Connect up to 63 devices and transfer data at 400 megabits per second using Firewire, an Apple-originated standard. Show graphics illustrating the Firewire cable end.

Learn to identify SATA cables and ports, use color coding to distinguish red and blue motherboard connections, and employ adapters to read old IDE drives and back up data.

Explore VGA and other video connections, including angled and flexible cables, adapters between VGA and DVI, color-coded ports, and audio integration via the sound card.

Explore how HDMI cables connect high-def TVs, home theaters, game consoles, and Blu-ray players, highlighting cable lengths from three to ten feet and the rise of HDMI monitors.

Explore DVI connections, distinguishing digital and analog signals and why only compatible pin layouts and the blade fit; converters bridge incompatible paths to deliver a display image.

Explore how Bluetooth enables close-range wireless connections between two devices, requirements for pairing, one-to-one links, and common uses from headsets to speakers and mice.

Learn how infrared remotes work, their one-to-one targeting, and why infrared cannot penetrate walls, including wired systems that extend infrared signals to receivers that must be pointed at the television.

Near-field communication enables near-proximity transfers between devices. It powers mobile wallets like Apple Pay or Android Pay and allows sharing contacts or pictures with technologies like AirDrop or Bump.

Explore power supply connections, including 4-pin, 6-pin, and 8-pin connectors, with 3.3, 5, and 12-volt rails powering motherboards, drives, and floppy options.

Learn power supply safety by choosing UL-certified units, replacing rather than repairing dead supplies, and keeping dust out to maintain cooling and protect the system.

Choose a power supply that fits the case’s form factor, meets cooling needs, and provides a sufficient power rating to support all components on the board.

A live demo of an internal power supply with ventilation and a mesh-covered fan demonstrates cooling, cable connections, and the importance of correct wattage and connectors.

See a live demo of a legacy power supply, its cooling fans, motherboard power connector, and the abundance of cables, contrasted with newer supplies offering more connectors.

Inspect the voltage selection switch, default 115, and slide to the new setting if needed; note the protective tape and potential absence of an on/off switch in this model.