cubase Al5 is not opening(start up Issue)

I have been using Cubase Al5 from last 2 years. Last week I have installed Kontakt 5 VSt, after that I cant open my Cubase al5.when I open Cubase al5 its showing loading files(startup page only)its loading vst plugins for 1 or 2 hours :imp: I don’t know what t o do?? I have removed all vst’s include kontakt5. I have reinstalled Cubase al5, however its not working… same issue…can u help me please?? Urgent…

config : windows 8 64 bit,cubase Al5