I have an Envy dv7 that came with windows 8. Recently when booting up it comes up with the user name, then after a minute or so it shows "preparing windows". It stays like that for a couple of minutes then the screen turns dark blue. After a few more minutes it opens a dark blue screen with just a couple icons on it which are not my settings. If I 'restart' the computer, it takes forever to restart but the correct screen eventually comes up. This whole happens intermittently but seems to happen when I start up in the morning. After the initial problem starting up, it starts up correctly during the day, again going through the problem screen when I start it up the next morning. It's been doing this for several weeks.
Any help will be appreciated.