My P5Q Pro Turbo went to sleep in mode S1 without having installed Asus s/w. Waking and sleeping is excellent compared to Win XP. LAN and audio drivers that came with Win 7 worked well. If you have the time you may want to uninstall Asus drivers and see if WIn 7 drivers work.
Download the latest AIsuite, extract , go to folder open Setup.exe with right click and chose Properties. Then go to Compatibilitiy and chose Ãƒâ€” Run this program in compatibility mode for : Windows Vista ( Service Pack 2 ) and under Privilege Level apply Ãƒâ€” Run this program as an administrator.
When still not going try with Ãƒâ€” Run this program in compatibility mode for : Windows Vista or Windows Vista ( Service Pack 1)