Troubleshooting a PC That Only Powers On After Being Unplugged for Over Two Minutes
If you’re experiencing an unusual issue where your computer refuses to power on immediately after shutdown but only starts after being disconnected from power for a couple of minutes, you’re not alone. This problem can be perplexing, but understanding potential causes and solutions can help restore normal functionality.
Understanding the Issue
A common symptom is that the PC remains unresponsive when attempting to turn it on shortly after shutdown. However, if you disconnect the power cable and wait for approximately two minutes before plugging it back in, the system powers on normally. This behavior suggests possible issues with power management or hardware components that are failing to reset properly during shutdown.
Key Details
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OS & Software Settings: The system runs Windows 11 Pro (version 24H2). Hybrid or fast startup features are disabled, reducing the likelihood of software conflicts.
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Hardware Configuration:
- CPU: AMD Ryzen 7 7800X3D
- Motherboard: ASUS ROG Strix B650E-F GAMING WIFI
- Graphics Card: Powercolor Red Devil AMD Radeon RX 7800 XT
- Memory: G.Skill Flare X5 DDR5 RAM (F5-6000J3636F16GX2-FX5)
- Storage: Two Corsair MP600 Pro NH 2TB NVMe SSDs
- Power Supply: Corsair RM750x (2021 model)
- Cooling: Arctic Liquid Freezer II 360
- Case: Lian Li O11 Dynamic EVO
- Other: Multiple Noctua NF-A12x15 PWM fans
Given this configuration, and since software power management is unlikely the culprit, the issue might stem from hardware components—most notably the power supply unit (PSU).
Potential Causes and Diagnostic Steps
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Power Supply Unit (PSU) Issues
The PSU supplies power to all components and can exhibit issues where it fails to provide power immediately after shutdown. The symptoms you’ve described are consistent with a faulty or aging PSU that needs a delay before supplying power again. -
Motherboard or BIOS Issues
Although less common, motherboard faults—such as faulty power circuits or BIOS misconfigurations—can cause power-on difficulties. -
Hardware Standby Residue
Components like capacitors or residual charge in power circuitry may
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