Can’t install the Windows 10 upgrade using Windows Update, then try the following By: J W Stuart July 23rd, 2016
Note: I suggest you make an Image Backup (to an external USB drive) of your current version of Windows before you attempt the upgrade. Should anything go wrong during or after the upgrade you can use the backup to restore your previous version. See the end of this article on more information on Image backup utilities.
Windows 10 upgrade: How-to information on scheduling and notifications: To check your status or make a change to your upgrade schedule or notifications, see the instructions below. https://support.microsoft.com/en-us/kb/3095675
To start the upgrade process: A) Disconnect all unnecessary devices (USB Thumb drives, Media cards, Etc.) just have the keyboard and mouse. Install the latest Graphics driver update. Disable your Anti-Virus software. Restart the computer and try downloading Windows 10 again.
B) Rerun the Compatibilty Appraiser: Open a Command Prompt (Run as Administrator). At the promt enter: schtasks.exe /Run /TN "\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser" and tap the 'Enter' key, now wait about 20 minutes for the task to complete and then perform step C.
If you still can't start or complete the installation using the download version of Windows 10 then try using the Windows 10 Media Creation Tool: https://www.microsoft.com/en-us/software-download/windows10
Note: When you click on the above link, please read the instructions carefully.
"IMPORTANT: To upgrade for free, select Upgrade this PC now in the tool. You should NOT be asked for a product key during the upgrade process. If you create a USB and use it to install, make sure to remove the USB as soon as setup begins. If you don't, you may be prompted for a product key. If this happens, remove the USB and restart your PC to continue with setup. Will you be running the tool from a 32 bit or a 64 bit device? Download the version for the device that will run the tool."