I had trouble booting from certain rescue disks. I have Win8.1 upgrade from Win8 now. Since then I have had several issues to work out. I thought my backups were working properly, but they are not. I looked at event viewer for File History. Come to find out I had a problem come up there.
It...
backup issues
boot problems
cbs log
check disk
corrupted files
data recovery
event viewer
file backup
file history
iso creation
macrium reflect
rescue disks
sfc scan
system repair
system restore
troubleshooting
tweaking.comrepair
user libraries
windows 8.1
windows upgrade