BSODs In Sleep Mode

Hey everyone...
I often put my computer in Sleep mode when I am leaving for a short period of time, but lately when I am returning, the computer is off. When I boot it up, the "System did not shut down properly" screen comes up. I just select start normally and everything boots fine. When Windows finishes loading, I get the "Windows has recovered form an unexpected shutdown message" and it says the problem event name was BlueScreen.

I am running Windows 7 Home Edition x64. Windows came pre-installed and the computer is only 6-7 months old. Dump files are attached.

BSOD caused by nbdrv.sys which is used by NetBalancer from NetBalancer - internet traffic control and monitoring tool
Simply remove that program to fix the BSOD

Code:

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck 9F, {3, fffffa80021e3700, fffff80003fcd518, fffffa8005b70c70}

*** WARNING: Unable to verify timestamp for nbdrv.sys
*** ERROR: Module load completed but symbols could not be loaded for nbdrv.sys
Probably caused by : nbdrv.sys


DRIVER_POWER_STATE_FAILURE (9f)
A driver is causing an inconsistent power state.
Arguments:
Arg1: 0000000000000003, A device object has been blocking an Irp for too long a time
Arg2: fffffa80021e3700, Physical Device Object of the stack
Arg3: fffff80003fcd518, Functional Device Object of the stack
Arg4: fffffa8005b70c70, The blocked IRP

Debugging Details:
------------------


DRVPOWERSTATE_SUBCODE:  3

IRP_ADDRESS:  fffffa8005b70c70

DEVICE_OBJECT: fffffa8003936050

DRIVER_OBJECT: fffffa8003924a20

IMAGE_NAME:  nbdrv.sys

DEBUG_FLR_IMAGE_TIMESTAMP:  4bedc915

MODULE_NAME: nbdrv

FAULTING_MODULE: fffff88003c8a000 nbdrv

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

BUGCHECK_STR:  0x9F

PROCESS_NAME:  System

CURRENT_IRQL:  2

LAST_CONTROL_TRANSFER:  from fffff80002d359c2 to fffff80002cc8d00

STACK_TEXT:  
fffff800`03fcd4c8 fffff800`02d359c2 : 00000000`0000009f 00000000`00000003 fffffa80`021e3700 fffff800`03fcd518 : nt!KeBugCheckEx
fffff800`03fcd4d0 fffff800`02cd4652 : fffff800`03fcd648 fffff800`03fcd648 00000000`00000001 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x34a90
fffff800`03fcd570 fffff800`02cd44f6 : fffffa80`04cdec68 fffffa80`04cdec68 00000000`00000000 00000000`00000000 : nt!KiProcessTimerDpcTable+0x66
fffff800`03fcd5e0 fffff800`02cd43de : 00000012`e8fb5655 fffff800`03fcdc58 00000000`0007f1b2 fffff800`02e3f8c8 : nt!KiProcessExpiredTimerList+0xc6
fffff800`03fcdc30 fffff800`02cd41c7 : 0000001b`d68d94cb 0000001b`0007f1b2 0000001b`d68d94f2 00000000`000000b2 : nt!KiTimerExpiration+0x1be
fffff800`03fcdcd0 fffff800`02cc0a2a : fffff800`02e3be80 fffff800`02e49cc0 00000000`00000000 fffff880`03b13db0 : nt!KiRetireDpcList+0x277
fffff800`03fcdd80 00000000`00000000 : fffff800`03fce000 fffff800`03fc8000 fffff800`03fcdd40 00000000`00000000 : nt!KiIdleLoop+0x5a


STACK_COMMAND:  kb

FOLLOWUP_NAME:  MachineOwner

FAILURE_BUCKET_ID:  X64_0x9F_IMAGE_nbdrv.sys

BUCKET_ID:  X64_0x9F_IMAGE_nbdrv.sys

Followup: MachineOwner
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Got it. Thank you very much.