Blue screen crash/freeze immediately after Intel iMac goes to sleep

Howdy all,
I have a new Intel 24" iMac, less than 3 days out of the box. Almost every time the computer goes to sleep (except twice so far when I first started using the machine) the screen goes dark for a few seconds, then turns light blue and freezes. Neither mouse movement or keyboard input will wake it up, and I have to do a hard reboot. This happens if I put the computer to sleep or just let it happen per the Energy Saver timed settings. Hardware test shows no errors. Screen saver has been disabled. All other settings and software was imported using the setup assistant from my previous iMag G5 running OX 10.3. Tried contacting automated Apple support (newly-reduced live tech support hours are NOT an improvement) and have come up empty. Any suggestions?
Thanks in advance...

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Read our privacy statement online:
http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409
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FS
These were all Related to NETwNs64.sys Wireless WiFi Link Driver from Intel Corporation (yours is 5 years old). I would remove the current driver and install the newest driver available.
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Microsoft (R) Windows Debugger Version 6.3.9600.17237 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\Ken\Desktop\problem\103014-25318-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
************* Symbol Path validation summary **************
Response Time (ms) Location
Deferred SRV*D:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: SRV*D:\symbols*http://msdl.microsoft.com/download/symbols
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Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7601.18409.amd64fre.win7sp1_gdr.140303-2144
Machine Name:
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Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
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NETwNs64+2673be
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iopl=0 nv up ei ng nz na pe nc
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iopl=0 nv up ei ng nz na pe nc
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SYMBOL_NAME: NETwNs64+2673be
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IMAGE_NAME: NETwNs64.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 4d10df1b
STACK_COMMAND: .cxr 0xfffff88009ace4d0 ; kb
FAILURE_BUCKET_ID: X64_0x3B_NETwNs64+2673be
BUCKET_ID: X64_0x3B_NETwNs64+2673be
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:x64_0x3b_netwns64+2673be
FAILURE_ID_HASH: {69744f93-8380-f8c7-a080-fedb60128a80}
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Wanikiya and Dyami--Team Zigzag

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This is an old thread, but I'm replying in case anyone can shed more light on the subject -- or if my experience helps.
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Blue screen crash/freeze immediately after Intel iMac goes to sleep

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