The tags are slightly off for the control panel dialog box, but use common sense, they are all there, and your will find them.
For me, the step: Allow wake timers > disable/enable try both settings
can be left as default in the "disable" mode, no need to try both.
Before the fix, 7's much touted Sleep Mode was working intermittently at best. This nails the problem!
... instantly goes off... and better still, instantly comes back on when asked.
Thanks for saving me the hassle of trying to fix the problems with a Clean Install... that would have wasted hours!
Keep-up the good work.... it is greatly appreciated!