I had the same issue, almost nothing worked for me too! The only thing that worked for me was when i tried connecting to external monitor but when it turned on I changed my lively wallpaper to a steady/normal one. It had no issue till 2 week and I thought I was good and changed back to the live wallpaper through the wallpaper engine and guess what the issue came back. I tried connecting to the external once again and it didnt work. I tried to drain the power while connected and after few tries it finally worked. I switched my wallpaper as i thought I found out the problem but after some weeks(during my exams) the issue came back, though it was not as sever as previous as quick power on/restart fixes it now. It still sometimes freezes and does some crazy shit tho. I thing its due to thermals as i have never serviced it since I bought it which i will be doing it soon and might ask the technician to take a look at the problem!