Over the last few days something has been preventing my monitor from going into standby. I have set Windows to turn off the display after 1minute of idle time and have tested it a lot but the monitor simply won't turn off. Other days it works just fine, and I haven't been able to find the cause of this odd problem. I have run powercfg with the -requests switch and got: Code: DISPLAY: None. SYSTEM: None. AWAYMODE: None. Whereas, when running Media Player Classic which prevents screensavers/standby from kicking in, shows: Code: DISPLAY: [PROCESS] \Device\HarddiskVolume2\Program Files (x86)\Combined Community Codec Pack\MPC\mpc-hc.exe SYSTEM: [DRIVER] VIA High Definition Audio (HDAUDIO\FUNC_01&VEN_1106&DEV_4441&SUBSYS_104383CF&REV_1001\4&2ba 06080&0&0001) An audio stream is currently in use. [PROCESS] \Device\HarddiskVolume2\Program Files (x86)\Combined Community Codec Pack\MPC\mpc-hc.exe AWAYMODE: [PROCESS] \Device\HarddiskVolume2\Program Files (x86)\Combined Community Codec Pack\MPC\mpc-hc.exe powercfg with the -energy switch doesn't show anything abnormal other than some warnings about not being able to suspend some USB devices but that appears to be common. I have also pulled out the mouse cord and waited 1 minute but the monitor does not go into standby. The only major hardware change I've done is a bios update, and there is nothing over at ASUS P7P55D forums to suggest any issues with power savings. Any ideas?