Hi Brinaa,
In some instances, anti-virus software and Unplug extra hardware may hinder the Windows 10 upgrade. As an initial troubleshooting, you may try to disable the virus protection that was installed on your PC and check if it makes any difference.
If the issue still persists, you may check the suggestions of Andre Da Costa from the thread below and apply the recommended procedures.
Stuck on making sure you're ready to install while installing windows 10
Update us with the result.