Complete IT Troubleshooting Skill Training 101 Course

Master the troubleshooting process as a method to identify failure causes and apply seven steps—analyzing, testing, deduction, elimination, isolation, identification, and fixing—to solve hardware and software problems.

Explore inclusion isolation and exclusion isolation to troubleshoot a laptop among suspect components A, B, C, and D, focusing on the major component D.

Explore troubleshooting techniques for a failing laptop, a failed computer model, a printer, a network connection, and a vintage operating system.

Troubleshoot a failed laptop by testing the power button, adapter, and power source to determine if the fault lies with the adapter, power supply, or laptop.

Learn a step-by-step approach to diagnosing why a laptop won't turn on, testing the power cable, adapter, power jack, and the power button, and identifying motherboard issues.

Inspect the laptop's power jack and power button using a multimeter to verify 19 volt and 3.3 volts, and determine whether faults lie in the jack, button, or motherboard.

diagnose the 3.3 v motherboard circuit by verifying 19 volts at the MOSFET drain, testing the resistor, disk capacitor, and coil with a multimeter, and confirming if 3.3 v appears.

Explore core network concepts such as IP addresses, subnet masks, and how they work. Understand gateways and how they operate, and the purpose of DNS.

Understand IP addresses as unique identifiers that let devices exchange information on a network, differentiate computers and websites, use the four-octet format, and note that ICANN allocates IP addresses.

Understand how subnet masks use four octets from 0 to 255 to define an IP range and limit devices. Review examples like 255.0.0.0 and 255.255.255.0 and note default home networks.

Explore how gateways regulate data flow between networks, with firewalls, proxy servers, and DNS that connect domain names to IP addresses to access the internet.

Understand how the dynamic host configuration protocol automates ip address assignment on ip networks, eliminating manual configuration and simplifying device connectivity.

Learn to troubleshoot a networked printer using inclusion and exclusion models, checking power, cables, IP addresses, and drivers to isolate whether the printer or network is at fault.

Identify and fix a failed network connection by inspecting the router signal, cables, and DHCP settings, then reset devices or use a switch as a bridge to restore connectivity.

Explore how the windows operating system acts as the core software that enables programs and drivers to run devices, with proper drivers required for sound, video, keyboard, and printers.