System failed to start following an unexpected power loss.
System failed to start following an unexpected power loss.
Hello everyone, I just had a power outage while my computer was running, and now I can’t boot it after the power comes back. When I try to press the power button, everything seems to turn on but it still doesn’t start properly. I’m trying to figure out how to check the system’s condition. Thanks for your help, Millie.
Standard power supplies often include a MOV, which acts as a safeguard against power surges. It functions as a backup until it fails, potentially damaging internal components. If the PSU lacks additional protections like short circuit protection, it may fail along with other parts such as the PC components. The device can collapse a resistor or even a transformer if the outage is severe. Running a PC directly from an unprotected, ungrounded outlet increases the risk of immediate failure, regardless of the PSU's quality. Even robust models are vulnerable without proper safeguards. I’d recommend a reliable UPS if this scenario occurs frequently.
It's best to avoid opening the power supply unit unless you're certain. You'll need to check the damage yourself; otherwise, estimates won't be accurate unless you have costly testing tools. Connecting a faulty PSU to testing equipment could harm expensive gear. The first step should be swapping it out and identifying which one caused the issue.