If your computer case will not power on, check to see if the power supply is plugged in and turned on correctly. It’s also a good thing to ensure your powerstrip or any power protection your computer is plugged in also has power. Also, make sure that all the front I/O connections are correctly connected to the motherboard. If all of those appear to be correct and you continue to see issues, consult a PC expert to determine what the issue is.
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