I'd take a close look at the errors reflected in Event Viewer.
Anything that stops chkdsk /r is something to worry about, IMO.
If the hard drive gets a clean bill of health (and I would run the hard drive manufacturer's diagnostic)...I'd be concerned that the partition has problems...which is why I would examine Event Viewer for errors indicating that something is going wrong and needs action.
How To Use Event Viewer - http://www.bleepingcomputer.com/forums/t/40108/how-to-use-event-viewer/
The 7E STOP error seems like a red herring, IMO...or an aftershock type effect. Key words on that from the www.aumha site: "There are numerous individual causes for this problem, including hardware incompatibility, a faulty device driver or system service, or some software issues. Check Event Viewer (EventVwr.msc) for additional information