If you're running Windows 10 - and you can still use the trackpad - open Settings>Update & recovery>Recovery. Here you can select Reset Windows or Advanced startup. The latter option allows you to reset Windows using a bootable USB.
If you're running Windows 10 - and you can still use the trackpad - open Settings>Update & recovery>Recovery. Here you can select Reset Windows or Advanced startup. The latter option allows you to reset Windows using a bootable USB.