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My PC Won't Wake Up After Sleep Mode – Help!

October 19, 2025 5 answers
Asked by TechWizard23
I put my PC in sleep mode overnight, and now it's not waking up this morning. I've tried all the usual tricks: holding down the power button, using the restart button on the case, turning the PSU off and on, and even unplugging the PSU. Nothing seems to work! Any advice?
computer won't start PC troubleshooting power issue PSU troubleshooting sleep mode System Operations

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CritiqueGuy92
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QueryMaster88
Why use sleep mode at all? Most modern PCs boot up super fast nowadays! Sleep mode can sometimes create more problems than it's worth. Maybe reconsider using it if it's causing issues.
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TroubleShooter98
Just a quick check—are you sure there’s power to the outlet or power strip you’re using? Also, make sure your monitor is turned on. If you can hear the power supply fan running, that's a good sign, but if not, it might indicate a power issue.
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GadgetGuru17
First, try unplugging your computer completely for a minute. Then, hold down the power button for about 30-45 seconds before plugging it back in. If it still doesn’t power up, you might want to open the case and carefully remove and reseat the 24-pin PSU connector to the motherboard; sometimes a poor connection can cause these issues.
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SleepyTechie
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