My PC Stopped Working After Power Outage - What Could Be the Problem?

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Discussion Overview

The discussion revolves around troubleshooting a personal computer that stopped functioning after a power outage. Participants explore potential causes and solutions, focusing on the power supply and its behavior following a blackout.

Discussion Character

  • Technical explanation, Exploratory, Debate/contested

Main Points Raised

  • One participant reports that their PC did not turn on after a power outage, suggesting it may be "dead" despite the monitor powering on.
  • Another participant proposes that the power supply may have been damaged and suggests unplugging it for a period to reset it, noting that some units can lock out.
  • A later reply confirms that unplugging the power supply worked, indicating that the initial assessment about potential damage was likely correct.
  • Further explanation is provided regarding how power supplies can lock out if output lines are not maintained within specified limits, requiring a complete power cycle to reset.
  • Participants discuss the implications of a potential permanent problem if the power supply reactivates the lockout condition upon attempting to power it back on.

Areas of Agreement / Disagreement

Participants generally agree on the likelihood of the power supply being the issue, but there is no consensus on the permanence of the problem or the implications of the lockout condition.

Contextual Notes

There are limitations regarding the assumptions made about the condition of the power supply and the potential for other components to have been affected by the power outage.

Who May Find This Useful

This discussion may be useful for individuals experiencing similar issues with their PCs after power outages, particularly those interested in troubleshooting power supply problems.

pivoxa15
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My PC suddenly stopped working after a power blackout. I.e. The PC didn't turn on even after the power went back on. It is as if it is dead.

It is about 6 years old. What could be the problem? The monitor still turns on but obviously no pictures just a blank screen. Would could be the problem? Could the processor had been 'over clocked' so its life time was reached?
 
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Chances are your power supply got damaged.
Unplug it, wait 10 minutes, then plug it back in.
Some units can lock out.

If that doesn't help then replacing the power supply might fix things up.
Depends on if anything else got damaged.
 
Thanks for the advice, it worked by pluging it back in after a while. So you were most likely right about the damage to the power supply.

Could you possibly explain some of the theory behind what just happened? What do you mean by some units can lock out?
 
If the power supply detects that one or more output lines are not maintained within specified limits then a circuit is activated that shuts the oscillators down.

This condition will remain until the supply is unplugged and all stored charge dissipates (the only way to turn off the lockout switch).

If there is a permanent problem then the circuit will get reactivated when you try to turn the power supply back on.

Since it works now, all is good. :smile:
 

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