Can you boot into safe mode?
If you can I'd then do an in-place upgrade (if you really don't want to do a clean install).
It should take only 20 minutes or so after the download and you'll keep your data/apps.
And then think in future (or make a backup) before changing authority and/or...
Maybe the previous drivers have been outdated and thus causing that issue, try updating via the driver updater and retry.
With Regards,
Xovo
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