this happend out of nowhere or did you install anything...
( it will cold boot into windows8- well if it is still set as main bootup under msconfig/systemstart it will do so )
to the problem with the page fault in non paged area / is there any more info ?

It ma be a combination of 2 things. The system reservered is 350Mb that can get damaged. Also turn off fast boot option in windows 8 power settings. This may help. I had this too on my dual boot the only way to fix it properly is to make a 350 mb system reserved. Delete all other partitions. Install win 7. Then create a 2nd partition & install win8 into that.

As i said, I had exactly the same. the above method was the only way to fix it properly.  I now haw a properly working win7/8 dual boot. Hope this helps.

page fault in non paged area doesnt it throw out any more information or is it just rebooting right after ? Do you have any external drives connected ? As far as i know you just recently made that setup on that desktop could it be that you installed NetFramework lately or updated any motherboard specific drivers.sorry for asking again

Mhk i just asked bc i had a similar problem with windows 8 and motherboard utilities 
did you try booting up 7 and restarting into windows 8 safemode ?
Its all guessing at this point without a specific Page fault error code.. or wait for yrag  
PS: in event viewer go to user defined/Admin - it should show you a list of warnings and critical errors search for the latest. 

I'm with you wiz. Have a good seat now ready for the action. You know what the word out there is. If you want it f- up call Jim.

I have to say, I wish I had read this message before stumbling onto the solution myself.   In the end, I had to kill Windows 8 and the System Reserve partition on my Windows 7 drive, then use the Windows 7 install CD to repair the bootloader.  

I absolutely hate the new Windows 8 "fast bootloader".   It is anything but fast.   Text for a boot loader is just fine, we don't need no stinkin GUI to choose an OS. 

Darv