I found a new trick you might try. After doing this, you might want to restart prior to trying another sleep cycle.
Open a Admin command prompt. Type cmd in the Start Menu search box then CTRL-Shift + Enter.
Type "powercfg -energy" (without the quotes and there is a space between g and -), and hit enter. It will take about 60 seconds and will write a HTML page, so make note of where it puts it, in the Windows\System32 folder I believe. Check the report and see if anything shows up.
Operating System Win 7 x64
Computer Type Homebuilt
OS Service Pack 2
DirectX Version 11
CPU Type and Speed i7 3770K
Motherboard Chipset Asus P8Z77-V Pro
System Memory Type 16 GB Kingston
Video Card Type and Speed Nvidia GTX 680 (2)
Computer Monitor LG 27" (3)
Hard Drive Kingston 240 SSD
Optical Drives LG WH12LS30 Blu-
Modem-Router Type Linksys E3000
Network Adapter Intel Gigabit
Anti-virus Software MSE
Computer Skill Level Average Ability
Windows Experience Index 7.7