Unpredictable MBP wake from sleep in Windows 7 Boot Camp

EDIT:

Changing the following setting definitely helped, it slept through the night but I just experienced a random wake up.

Device Manager -> Network adapters -> "broadcom" device -> Properties -> Power management -> Uncheck "Allow device to wake computer from sleep"

Also disable the Apple Bluetooth radio from allowing the computer to wake up.

I have exactly the same problem and have not found a solution online.

I did find this great website with some tips on how to troubleshoot the problem. (It's for Vista but all the tips should work for Windows 7)

I'm trying them now - I will let you know how they go.

I had this exact problem within my Bootcamp on Windows 10 and now my Bootcamp sleep is working perfectly. SOLUTION: The computer needs to have the same Startup Disk specified on both Bootcamp and Mac OS X.

In Bootcamp, go to the Boot Camp Control panel and select the startup disk and click OK.

Right click on the Boot Camp Control panel and Restart in OS X. Once there, go to Preferences...Startup Disk and set the same startup disk.

Reboot, go into Bootcamp and reboot again for good measure. Then go into Bootcamp and test out the sleep function to verify that it is fixed.

Note that in my case, when I got to the OS X Startup Disk screen, BOOTCAMP was not even an option. The only icon was for the Mac partition. I found this blog post where it mentioned that Tuxera NTFS can cause this problem. After disabling Tuxera and rebooting, the Bootcamp disk appeared as an option and I was able to select it.

If you're like me, you're thinking that this shouldn't have anything to do with Bootcamp's sleeping problems. Here's a couple blog posts that confirm the fix.

http://blog.ovesens.net/2013/09/macbook-air-sleep-mode-not-working/

http://osxdaily.com/2011/04/05/how-i-fixed-my-macbook-air-11-6-wake-from-sleep-problems/

*I was lazy and grabbed the screenshots off google to illustrate