It sounds as though your system may have gone into a suspended or hibernated state. Try pressing the power button briefly to see if this will bring the system out of its state.
!!!WARNING, READ CAREFULLY BEFORE PROCEEDING!!!
If that didn't bring your system back to working order, hold the power button down for 10 seconds and the system should shut off. However, there is a small risk that this could result in >!!!WARNING, READ CAREFULLY BEFORE PROCEEDING!!!
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It sounds as though your system may have gone into a suspended or hibernated state. Try pressing the power button briefly to see if this will bring the system out of its state.
!!!WARNING, READ CAREFULLY BEFORE PROCEEDING!!!
If that didn't bring your system back to working order, hold the power button down for 10 seconds and the system should shut off. However, there is a small risk that this could result in >!!!WARNING, READ CAREFULLY BEFORE PROCEEDING!!!