Retina MacBook Pro 13" i7 2.8 GHz CPU 16 GB RAM 1 TB SSD Intel 5100 Graphics Clean installation of Windows 7 x64 (and Technical Preview Enterprise Edition) in Boot Camp both result in a high CPU load, even in idle, that drains the battery excessively. The Task Manager lists two culprits: "System" and "System Interrupt", for an average total of 30% CPU load divided more or less evenly between the two. I tried disabling the Broadcom wireless and bluetooth adapters to no effect. All drivers seem to have been installed properly. I've found a work around to this issue but would like to find a permanent solution: Whenever I close the lid, allow the system to sleep for a few seconds and then resume again both tasks drop to almost 0% immediately. Has anyone else experienced this issue and found the root cause?