Windows 7: BSOD on sleep (SF diagnostic zipfile attached)

Hi,

This usually doesn't happen if I try to sleep within a few minutes of starting up my computer, but trying it after prolonged use, the monitors turn off right away but I'm hearing the fans whirring for about five minutes before the computer just quits and turns off rather than going to sleep.

My configuration is as follows:
i7 3770K
MSI Z77-G43
16GB Patriot Viper 1600 ram
Samsung 840 Pro SSD
EVGA GTX 560



My SF diagnostic zipfile is attached with further details about the crash. Any advice would be appreciated.

Thanks!

Here is the info provided by windows:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033

Additional information about the problem:
BCCode: 9f
BCP1: 0000000000000003
BCP2: FFFFFA800E965060
BCP3: FFFFF800044A83D8
BCP4: FFFFFA800CE16330
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

Restored system to a week ago before any of this was happening and the sleep works fine now. Comparing to before restore, it seems that the culprit driver could be any of:

Intel (System) 7.00.1097
Microsoft (HIDClass) 8.15.403.0
Microsoft (HIDClass) 9.5.154.0
Microsoft (Keyboard) 9.5.154.0
Microsoft (Mouse) 9.5.154.0

I don't mind keeping the computer at this restore point, as no significant changes have been made so tentatively this may be considered resolved...