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#11
AVG is always a crap, but this time it is behaving worst.
Sorry to say it, but if it continue to crashing after all the steps you have taken till now, the best, easiest and the shortest way is to start over afresh. Can you go for a Clean Reinstall - Factory OEM Windows 7 ? This method works similarly good with retail, too.
About the realtek driver, the driver got updated between I post and you see ... so the date and SID changed. :)
After the clean reinstall, take the Win7 and WinServer 2008 R2 Auto Installation Program from Realtek