Windows 10 downgrade bootloop

windows-10 downgrade windows-8.1 bsod safe-mode

Judging by your error message 

A pointer device reported a bad angular physical range

It suggests that somehow your touchpad driver is either corrupted or somehow has not up/downgraded successfully.

I would recommend uninstalling any drivers for your touchpad either via the normal remove programs control panel or via Device Manager and reinstall them from your manufacturer.

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