I had many problems after installing Ubuntu 13.10. The first one was that the OS option menu was not vsibile (Only pruple screen was available) and I was not able to choose between Ubuntu, Ubuntu Recovery, Windows 8, ...etc. After many attempts to solve this problem, I reinstalled Ubuntu 13.10 on the same partition. However, Windows 8 option is not available on the menu right now. The most caothic thing is that, "One Key Recovery" button does nothing but directing to Ubuntu. How can I make the recovery button work as usual and get access to Windows 8?