I've been experiencing this BSOD and freezing screen since I bought my Asrock Z68 Extreme 4 around 2 months ago.
Then I follow other forums **Official** Asrock Z68 Extreme4 thread. Share your experiences, OCs & tech issues! which I update all my driver Plus I've updated new iGPU driver version version 188.8.131.52.2509 for 64-bit Windows 7 and seems to be working well even in safe mode setting from windows.
Previous experience with Freezing issue was due to Eltron USB3.0 driver that provided by Asrock which version 0.96. Since I've updated to version 1.101 as per xtremesystems forums suggestion, I don't have a problem anymore with freezing issue.
With BSOD problems, previously I always have BSOD problem after my system was in sleep mode or even after resuming from screen saver. I've been running some testing to wake up from sleep mode and resume screen saver with bios 1.70 and seems to be running normal. So far I've only tested for 2 days. My CPU is running at stock level, doesn't change much bios 1.70 setting other then change into AHCI mode and change the graphics setup as onboard.
FYI, I use my PC only for browsing, watching movie and leave my PC into sleep mode. Used to be causing BSOD with power saving mode, somehow within 2 days PC has been running smoothly. If you can advise me
For those who's still running BSOD or Freeze please ensure to update your driver as per below:
Broadcom BCM57781 LAN Driver v184.108.40.206
EtronTech EJ168A USB3 Driver v1.101 (There's new version v1.105 but a lot of problems)
Intel ME Driver v220.127.116.118
Intel PCH Driver v18.104.22.1680
Intel HD Graphics Driver v22.214.171.124.2509 for 64-bit Windows 7
Lucidlogix VIRTU Driver v1.2.106
Marvell SATA3 Driver v126.96.36.1996
Intel RST v10.6.0.1022
i5-2500k (Not overclocking)
Asrock Z68 Extreme 4
GSkills Ripjaws X 1600 4x2GB
Seasonic M2 520 Watt (Forgot with the watt but i remember around 500 watt above)
Internal graphic card direct from Mobo
ATTENTION TO EMILY/ASROCK REPRESENTATIVE:
Please advise us which other driver are you using when you are running some testing. I found that Asrock website is not up to date with other driver such as Eltron USB Driver which causing freezing problem v0.96 and some driver is not up to date.
ATTENTION TO OTHER BSOD Fellow:
Can you please let me know how do you get BSOD normally, so I can check with my PC too.