When I resume my laptop from hibernation it does the following:
- the windows logo and circle of dots appears
- then the screen goes black
- then I get a coloured screen with circle of rotating dots
- then a sound which is like a USB device being inserted and immediately pulled out
- then after this the lock screen appears and I can log in

This process can take anything up to 1 minute but was only about 15-20secs with Win8.1. Laptop was upgraded from Win8.1.

Can anyone advise what may be causing this and how to resolve it?