Before you begin
Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.
Work through these checks
0 of 3 complete01Turn off your PC immediately
- Turn off your PC immediately
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
02Replace the PSU
- Replace the PSU
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
03Measure the voltage with a multimeter
- Measure the voltage with a multimeter
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
Possible causes
- Faulty PSU
- Failure of OVP protection
- Poor quality source
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