Dear Friends Today I download Window 10 pro x86 us by Media Creation Tool and start my Window 8.1 Pro. Upgrade begins and after servel restart error comes Window 10 Upgrade fails. Please see attachment and help me Thanks
need to give more info on your pc, what do you have on it? got any weird set up, some multiboot.....is your pc upgradable according to Ms?....more info
Get yourself a iso copy and throw it in a new folder and un-zip it from there and run setup with admin and you will be good it should take an hour or less just sit back and you will be up and running within that time frame
I did same thing as you says and one thing i have dual boot window 7 ultimate with wmp and window 8.1 Pro with wmp activated. My pc upgradable according to MS
Clone or back up your drive before you run your upgrade from your desktop and you should be fine, if you lose your dual boot you can go back without a heartbeat and I suggest you call M$ tomorrow if it not a holiday someone is there to get you going plus via remote so you don't have to do a thing Just make sure your not running any cracks or fishy keys You have 30 day free support and I suggest you use it if you lose your dual boot, M$ has a patch for you if that's the case in hand that the rep will install