08/30/2026
PC Diagnostics
Complaint:
System refuses to start, although the motherboard is receiving power.
Diagnosis:
The power supply unit (PSU) has failed. Testing indicates unstable/dirty voltage on the 12V rail, most likely caused by failed or deteriorating capacitors. The PSU also showed signs of overheating, which likely contributed to its failure.
Repair:
Replaced the faulty power supply with a new 700W dual-fan PSU.
Recommendation:
To help prevent future overheating and component failure, keep the unit clean and free of dust buildup. It is recommended to blow out the system approximately once per month.