Since I've installed win 10 I've ran into countless problems. I had the black screen with white cursor which turned out to be the integrated graphics displaying it on my second monitor which was off at the time. So fixed that.
Now the annoying part. Once it boots to desktop it takes an age to respond. I click the windows icon to go to start menu and it pops up 5-10 seconds later. I cant access a single icon the OS just freezes. If I right click on the desktop and choose screen resolution etc it says I don't have the correct program installed. I've tried to go through start up - setting - security and then recover but just to get there its about 10 minutes of waiting and once I choose to either reinstall win 10 or revert back to win 7 it just freezes up. The only thing win 10 has offered me is a working clock.