1. Windows 7 has problems with wakening, I've experienced them too. One option could be, shut your computer down, period. You could try this for a while?
2. Since you seem to have a rather clear picture of when problems began, perhaps you could try a restore point? Sometimes updates cause more trouble than they solve, be it Windows or other updates.
Important would be, that you have crucial Windows updates. If I were you, I would
a. check installed programs ~a few days ago, whatever that means, uninstall them
b. go to a restore point early enough, restore the system
c. try it all again, being careful with updates and new programs > take off any automatic updates, Windows too. Make them all report you about updates, but requiring your...