There're a lot (10 pages worth) of problem reports about this here: http://answers.microsoft.com/en-us/search/search?SearchTerm=KB3081424+microsoft&IsSuggestedTerm=true&tab=&CurrentScope.ForumName=Windows&CurrentScope.Filter=windows_10&ContentTypeScope=#/Windows/windows_10//2
I've got this update installed on 4 Windows 10 systems both 32 and 64 bit on 2 desktops, one with an Intel E7500 CPU and the other with an AMD Phenom-II X3, and I guess I've been lucky. I didn't run into any problems installing it. Based on the above link I can see a lot of folks did though.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?