Re-installation from the internet fails with error code -2005F, what does it mean?
It looks like you need to reset your device's NVRAM. Check out Apple's documentation that explains how to do that: How to reset NVRAM on your Mac

This thread on the Apple Support Communities suggests an NVRAM (or PRAM) reset will resolve this issue. If that doesn't work, it wouldn't hurt to try an SMC reset as well.