Slow start-up after installing windows 8.1

Hello, My Asus UX32V is starting up extremely slow after installing windows 8.1. I have been searching the web for answers and possible solutions, but haven't found any. Although the problem seems to happen to other users. The first time I installed 8.1 the start-up became very slow also. I, kind of, accepted this and did a fresh installation of windows 8. The PC started up normal again...