What are the signs of a bad power supply?

Learn to troubleshoot power supply problems

  • Any power-on or system startup failures or lockups.
  • Spontaneous rebooting or intermittent lockups during normal operation.
  • Intermittent parity check or other memory-type errors.
  • HDD and fan simultaneously failing to spin (no +12V)
  • Overheating due to fan failure.
  • Small brownouts that cause the system to restart.

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