Problem booting windows 8 after trying to mount windows pa

I am running windows 8 and Ubuntu 13.04 on a Sony Vaio SVE14A27CXH. I had installed both, and had the dual-boot working, but after i tried to mount my windows partition in ubuntu using https://help.ubuntu.com/community/Mo...dowsPartitions (https://help.ubuntu.com/community/MountingWindowsPartitions) , i haven't been able to boot windows 8; it gives windows error 0xc000021a on "windows boot...