How do I empty the cache on my computer to speed up the startup?.

There are 2 ways you can speed up the start up
Remove all the unused icons of the programmes from your task bar and the desktop by opening Task bar properties from the Start menuand clearing unwanted programmes Or Download CC Cleaner programme from Cnet/Downloads or going to their website. It is free and it cleans all the registry/caches/temporary internet files/and other files which you do not require. I have done the same. Every month I run this programme to speed up my computer.