system
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aswRvrt.sys is detected as an unsigned driver by windows 7 - thus you get the boot problem.
How I solved the issue:
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During boot-up, continuously press to get to Advanced Boot Options. Note: On some systems, you need to first press to go into Boot Menu, then press to reach Advanced Boot Options.
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When the menu appears, use the DOWN arrow key to scroll to “Disable Driver Signature Enforcement.”
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Press .
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Continue the boot process.
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After your computer has completed the boot process you have a couple of options,
Here’s what I found to be the best solution: Permanently disable driver signature enforcement by installing a program called ReadyDriverPlus:
ReadyDriverPlus download link: http://www.citadelindustries.net/rdp.php
Install Guide: http://forums.guru3d.com/showthread.php?t=306676
If you don’t see a system reserved partition just go ahead and run the installer. It will install to “C:\Boot” by default if “C:” is your windows partition.
Once installed - reboot and you’ll be presented with a modified boot screen. Just leave it alone and don’t press anything. The choices will be made automatically for you and your computer will boot with driver signature enforcement disabled.
If you later encounter another blue screen I suggest booting into safe mode then select Start > Run and type “chkdsk /f /r” (no quotes) then press enter. Then you’ll be asked if you wish to schedule a disk check on the next boot. Type “Y” (no quotes) and press enter - then reboot.
Another method to disable driver signature enforcement: Driver Signature Enforcement Overrider 1.3b
http://www.ngohq.com/?page=dseo
It’s a little more complicated - basically it involves enabling “test mode” then manually signing the driver by entering the files location.
C:\Windows\System32\drivers\aswRvrt.sys
Then for good measure list any other unsigned drivers using the sigverif.exe tool - Start > Run > type “sigverif.exe” (no quotes) and manually sign any other unsigned drivers using the above process.
Or you could just use DriverView 64 bit version from Nirsoft to list drivers. In the “Description” field any blank entry is an unsigned driver!
http://www.nirsoft.net/utils/driverview.html
You need DriverView for x64 if you’re using 64bit windows 7.