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- Check the power cord is plugged into the wall and to the back of the computer
- Verify the power supply is turned on and that the power indicator is illuminated
- Verify that the power supply cables are securely plugged into the motherboard and the peripherals
- Verify that all cords are properly connected to the display monitor and that the monitor is switched on
- If available, connect a different device to confirm if its power is working
- If the hardware connections appear fine, check for BIOS related issue by accessing the BIOS setup
- If the BIOS setup is accessible, check for device configuration in the BIOS setup and perform a hardware diagnostic
- If the BIOS setup is not accessible, try resetting the CMOS battery to reset BIOS settings to default values
- Check if the hardware components can be individually powered on starting with the power supply, motherboard, RAM memory, hard drive and later peripheral components
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