Problem fixed now. I think sfc or chksdk must have repaired the errors. I also used the recovery disc and it found some problem. Booting is faster now.
My laptop does not seem to boot into safe mode. I've been tapping F8, even though it says F8...system restore on the bottom left corner, it still won't boot. I tried this other method on advance recovery method and chose use system image created earlier - that and return to factory condition...