I just recently put my new rig together, so the Windows 7 Ultimate 64bit install is fresh, and all the drivers are the latest available. I have updated my mobo's bios to the latest version through Asus' "AI Suite II" which makes things very simple. I want my PC to be able to go into sleep mode but I don't want to have to force shutdown every time it goes into sleep mode after a time span. For some reason if I wake my PC after its been in sleep mode for a short period everything turns back on just fine... I know there might be a solution through the configuration panel - power management, but i'm unsure what I need to do if I want to keep sleep mode possible without the issue.
I am having the same problem with my system, I have a P8z68-V LE with an 2600k I7 3.4 ghz. I used the suite to overclock my CPU to 4.4ghz.