I have an acer laptop which came with windows 8. At some point over the last few months, it updated to windows 8.1 and shows this in bottom right hand corner of screen with build 9600 under it. When I check the status, it says windows is not activated but when I click on activate windows, it doesn't do anything! I have tried to install windows 10 update but it won't do it. I took it into PC world where I got it from but cos it's over 1 year old it's out of warranty so they want to charge me £50 just to look at it. Any ideas? Thanks in advance!