New
#11
Here are some things that have worked for others:
Disconnect everything except mouse, keyboard and display.
Disable or uninstall your anti-virus. Ditto if you use a firewall.
Run Disk Cleanup then download, install and run CCleaner Free.
If that doesn't help, you could try creating a backup of you system then do a clean install of Windows 7. Immediately try the upgrade to Windows 10 using MediaCreationTool or a ISO created by MCT or DVD or flash drive.