I have windows 8.1 x64 and have it for almost a year now! (upgraded from windows 8). It used to start in almost 1 minute from me pushing the power button of PC to me starting to browse the internet or do other things. Now it has become significantly slow. It takes the computer almost 12-15 minutes to process the startup programs. I have disabled almost all of the start up programs but it hasnt affected the start up! Is there a solution to this? or do i have to reinstall a fresh copy of windows?