I have tried to update To W10 on two occasions, on an (approx) 18 month old 11" touch screen Asus notebook that came with W8 pre-installed.
The first time was early on in the W10 campaign after running the checker, and being informed that there would not be problems.
Well some of my programmes would not run, including the touch pad/buttons and Internet Security, needless to say I went back to 8.1.
A couple of weeks ago I decided to try again, the checker said all would be OK.
All seemed to go well, apart from the fact that it seems to make big dent in my ISP download allowance.
After the install a couple of the minor programmes did not work, not to be deterred I decided to persevere for a while.
Running the machine for a couple of days showed that operation had slowed and the wick needed turning up somewhat, also the mouse pointer seemed a bit intermittent.
Again I returned the machine to 8.1, this time I started to get warnings about no security products installed, indeed I found that all security systems were disabled even Windows Defender (which would not restart).
Having been online without protection, I had to download and re-install my Internet Security product and start again.
W10 never again! In fact having used an iPad for a couple of years now, my next PC is more likely to be a fruit based system.
Edited By V8Eng on 30/12/2015 19:29:23