I've got weird things happen on my y500 lately. I hope anyone can shine a light on this. 1. In Energy Management, setting the battery option to [Optimized Battery Health] discharges the battery even if you're plugged in. I tried this with and without my SLI 650M. And all power options do nothing(High Performance, balanced, Power saver) until the laptop is drained empty. An technician from Lenovo support came over today and changed the mobo, and still it happens. He called back to HQ and they said Optimized does drain but up til 60% and it charges back. Now I'm monitoring for any further changes. 2. Event viewer gives me hundreds of event warnings on the system saying my processor is limited by system firmware. This annoys me to no end because I thought I had an incompatible chipset driver. I reformatted numerous times with different drivers and it still does that. Current install is Windows 8.1 UEFI install with Lenovo Malaysia's support site drivers. Does anyone else get these issues with their Y500's?