I have the display set to go dark after 5 minutes and the pc to fall asleep after 20 minutes of inactivity. All the peripherals other than the printer have proper power switches that are set to "off." The printer has never interfered with the power/sleep settings. For the last few days, I had to put the pc manually to sleep because it had stopped going to sleep on its own. The screen went into power save mode but the PC kept running as evidenced by the HD activity light and the steady power button light.
Tonight I decided to investigate. I entered powerconfig /requests in the command line to see what was requesting power. The search showed the printer spooler was requesting power. I opened the printer queue and there was nothing waiting to be printed. I deleted all old projects in the printer queue. I ran powerconfig /requests again and it showed no longer a power request by the printer.
The PC still refused to go to sleep. I then remembered that I had recently connected my iPad via Bluetooth to the pc. And indeed, my iPad was still connected to my PC via Bluetooth. Once BT was off on the PC, the PC started falling asleep according to the sleep/power settings.
Tonight I decided to investigate. I entered powerconfig /requests in the command line to see what was requesting power. The search showed the printer spooler was requesting power. I opened the printer queue and there was nothing waiting to be printed. I deleted all old projects in the printer queue. I ran powerconfig /requests again and it showed no longer a power request by the printer.
The PC still refused to go to sleep. I then remembered that I had recently connected my iPad via Bluetooth to the pc. And indeed, my iPad was still connected to my PC via Bluetooth. Once BT was off on the PC, the PC started falling asleep according to the sleep/power settings.