1. The Technician Mindset (A+ Core 1 → Real Intern Skill)

A system almost never “breaks for no reason.”

Problems usually come from one of five categories:

1. Power issues
2. Thermal issues
3. Driver issues
4. Storage issues
5. Network or OS issues

If you learn these five buckets, troubleshooting becomes fast and predictable.

2. POWER PROBLEMS — The Most Common Cause of System Failure

Power instability causes:

• random restarts
• crashing under load
• USB devices dropping
• flickering monitors
• system failing to POST

PSU Errors (Exam + Real Life)

• Too little wattage
• Failing capacitors