Can you give us a run-down on your hardware - graphics, mainboard, etc. Your system may not be fully compatible with Advanced Power Managment.
Also tell us what your power settings are - right-click on desktop, properties.
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This poetic animation about monsters is illustrated in a Van Gogh painterly style
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.