No puedo cerrar sesión

Plugin the computer to the charger and plugin the charger to a functioning electrical wall socket

Let the installation run until it tells you it wants to restart.

It will usually automatically restart several time until it eventually will present you with Login

You found the English-language version of Apple's user community. If the Spanish version is easier for you to use, you can find it here:

Comunidad de soporte de Apple oficial

Welcome

Perhaps the suggestion from @Allan Jones will work better for your needs