Desktop Memory System: incorrect power sequence. One regulated rail or enable signal appears at the wrong time.

The distinguishing clue

Fans or lights start but the board never completes initialisation.

Checks before an assessment

Record the exact memory-kit and motherboard models from existing records, plus any capacity or POST message. Do not force modules or repeatedly swap them during power-on tests.

Stop point: Forcing a module into a damaged or incorrectly keyed slot can ruin both parts.

Workshop confirmation and repair

Device-level check: Compare known modules and slots, inspect socket condition and review supported timings.

Targeted check: Measure the startup sequence against service information. If confirmed: Repair the regulator, enable or controller stage causing the sequence error.

Repair boundary: Repair the confirmed slot, channel, board or compatibility fault.

Related cause to rule out

When current draw is abnormal and protection may stop startup, also consider Desktop Memory System: shorted board rail before choosing a repair.

Checks after the work

After repair or replacement, check each channel, full capacity, memory test and sustained workload.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.