one thing you could try is buy another hdd, remove the win 7 hdd you have now, and install win 10 on it, using your win 7 key. Fresh installing win 10 is generally better than upgrading from win 7, mainly as it removes the older drivers which may not work well with 10.
Using a new hdd means you can keep your old install in case win 10 doesn't work out for you. Only downside is you would need to reinstall everything again, but as the upgrade doesn't seem to work anyway, its only choice,
Using a new hdd means you can keep your old install in case win 10 doesn't work out for you. Only downside is you would need to reinstall everything again, but as the upgrade doesn't seem to work anyway, its only choice,