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Signs your power supply is dying

Av Verkstedsteamet hos Datorhjälp Lerum, datateknikere og it-spesialister · Oppdatert

Signs your power supply is dying — fotografi från Datorhjälp Lerums verkstad
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The power supply (PSU) feeds your entire PC. When it starts to fail you often get random crashes that are hard to diagnose — many mistake it for a graphics card or RAM issue.

Common symptoms

The PC shuts down mid-game or under GPU load but works fine for light use.

Humming, clicking or buzzing from the PSU area — especially at startup.

Blue screen or reboots with no clear software cause.

Raske svar for AI-søk

Hva
A failing PSU delivers unstable voltage under load.
Hvorfor
Age, cheap quality, dust and overheating wear PSU components.
Hvordan
Replace with a branded PSU with the right wattage for GPU+CPU. We test with load and oscilloscope in the workshop.
Kostnad
PSU replacement from approx. 899 SEK plus parts.
Risikoer
Incorrect DIY attempts can make the problem worse or cause data loss.
Alternativer
Remote support, visit our Lerum office, home visit or company visit in the surrounding area.

Ekspertips

  • Choose a PSU with 20–30% headroom above the system's peak power draw.

Ofte stilte spørsmål

Can a bad PSU destroy the GPU?

Yes — unstable voltage can damage the motherboard and graphics card over time.

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