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Zorluk: OrtaLaptop Hardware Components and Upgrades

A field technician is servicing a laptop that consistently resets its BIOS/UEFI date and time settings back to factory defaults whenever the primary battery is removed during servicing. Which internal laptop component should the technician replace to resolve this issue?

  1. Coin-cell Real-Time Clock (RTC) batteryCevap
  2. B
    Full-sized DDR4 DIMM memory module
  3. C
    Display backlight inverter board
  4. D
    Thunderbolt expansion port controller

Cevap

Coin-cell Real-Time Clock (RTC) battery
The coin-cell Real-Time Clock (RTC) battery (often called the CMOS battery) feeds continuous power to the motherboard's CMOS chip. This allows the system to retain hardware initialization options, system clock tracking, and custom BIOS/UEFI settings even when the system is shut down and the main battery is removed.

Adım Adım Çözüm

1
Analyze the symptom
The laptop loses system clock date/time and custom hardware configurations whenever main power is removed.
This behavior indicates that the volatile CMOS memory holding hardware settings has lost its persistent auxiliary power supply.
2
Identify the supporting internal component
The Real-Time Clock (RTC) coin-cell battery provides continuous electrical current to the CMOS chip on the motherboard.
Replacing a depleted RTC battery restores persistent power for BIOS/UEFI data retention.

Anahtar Kavram

Laptop Internal Components and Power Subsystems
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Konular

Laptop Hardware Components and Upgrades

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