Welcome to the Windows 7 Forum.
Take a look in Device Manager for any driver
My understanding is that ntoskernl.exe can also cause fltmgr.sys to happen.
Take a look in Resource Manager. See if Windows see the same amount of ram you have installed. I have basically the same motherboard you have. Their are many people with these boards having problems with window not seeing all the ram.
Windows doesn't see the first two slot close to the cpu on my system. Is their any new hardware been added?
Run from comd. prompt admin. sfc /scannow.
If it finds a problem run it two more times booting between them.
Nice job filling out your specs.