I've been seen this from time to time in our environment, but have been just re-imaging in most cases since it was relegated to student machines, but I've had 3 teachers machines today. I can re-image those, but it's not really fixing the issue. Plus I have to pull their data off, etc..
Things I've tried are:
bootrec /rebuildbcd (reports installations: 0)
bootrec /scanos (reports installations: 0)
As suggested in some other places, I checked the boot partition.
I've also disabled automatic repair.
I'm running CHKDSK /R now, but it's a ways from being finished.
Has anyone been consistently able to fix this, and what can I do to prevent it? We've been using Windows 8 since August and this has mainly been on laptops, but I've had two desktops over the last month and we're adding 450 Windows 8 devices this summer, so I'd like to figure this out. We had a mobile lab that we put Windows 8 on, and ALL of them developed this issue. We put Win7 back on them, and no issues. They were admittedly a little older (Thinkpad T400s), but