Hi. Just built my HTPC with an Asus P5K Premium mobo, and put on Vista Home Premium. Would love to use the sleep function of Vista, and it sure works going to sleep (Power LED flashing on case). The problem is it stays asleep and will not awaken in response to pressing the power switch. The suspend mode in the Asus BIOS was set on [AUTO] , so I changed this to [S3 Only]. No help. [S1 (POS) only], the same. I have heard that older NVidia drivers are a problem, but mine are brand new, v.163. Does anyone have an idea how to approach this? Much obliged!!