Dad bought himself a HP x64 laptop for Christmas. For the last two months Dad and I have been trying everything we could find to get Win 10 installed. Every time we try, everything does ok until the last. When installing it jumps to 4% at start then about a minute or so it jumps to 85%. After another minute it reboots back to 8.1. Then a pop up asking when would he like to install Win 10. We choose now and a repeat of above begins. Next try we set a date and time for Win 10 to install. Next morning 8.1. I've searched Google repeatedly only to find others have the same problem but as of yet no solution. I've installed ALL updates from win update even the optional ones. Virus scanned with two scanners. Turned off/uninstalled all virus/malware scanners. Microsoft says his computer is ready for Win 10 so.... Has anyone found/heard of a fix for this?