BSOD when resuming from sleep

Hi all, I have been having an BSOD error report when resuming from sleep. Sometimes it will work fine, but generally it will start in BIOS giving me the option to start in safe mode etc. Starting normally always works with an error report waiting once windows starts. I tried going back to OEM version which was home premium x64(am using clean install of ultimatex64) via the f9 & back to factory default, but the problem persisted. I've read through other posts that it's often driver related.
hardware:
Asus UX31E Zenbook
4GB ram
128GB SSD
2nd gen i5
And i've reinstalled ultimate. Any help appreciated.

Hello there!

Seems like the crashes didn't produce any dump files. But when search the Event logs and found X64_0x9F_3_POWER_DOWN_IMAGE_athrx.sys which is referring to your Atheros Wireless LAN driver. I would recommend to remove it and download a fresh copy and reinstall it. http://www.atheros.cz/atheros-wirele...et=40&system=5

Code:

Event[16317]:
  Log Name: Application
  Source: Windows Error Reporting
  Date: 2012-08-16T20:00:22.000
  Event ID: 1001
  Task: N/A
  Level: Information
  Opcode: Info
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: agr-PC
  Description: 
Fault bucket X64_0x9F_3_POWER_DOWN_IMAGE_athrx.sys, type 0
Event Name: BlueScreen
Response: Not available
Cab Id: 0

Problem signature:
P1: 
P2: 
P3: 
P4: 
P5: 
P6: 
P7: 
P8: 
P9: 
P10: 

Attached files:
C:\Windows\Minidump\081612-7269-01.dmp
C:\Users\agr\AppData\Local\Temp\WER-16770-0.sysdata.xml
C:\Users\agr\AppData\Local\Temp\WERAC83.tmp.WERInternalMetadata.xml

These files may be available here:
C:\Users\agr\AppData\Local\Microsoft\Windows\WER\ReportArchive\Kernel_0_0_cab_0bf9fa36

Analysis symbol: X64_0x9F_3_POWER_DOWN_IMAGE_athrx.sys
Rechecking for solution: 0
Report Id: 081612-7269-01
Report Status: 0

No problem. Glad it's working :)