Write my Ini configuration file error

After the computer is reset ,c Disk is empty ,d The disk has no effect ,mysql Installed in the d disc ,mysql Services can use , But when I log in root Account cannot be connected mysql, It's said on the Internet that my.ini Of [mysqld] Add... Below skip-grant-tables, tried , It's no use . So I deleted mysql, The registry , Control panel ,c The disk is scanned with a full disk , And mysql Installation related items have been removed , Besides some other java Connected mysql The interface of , Then refit mysql. I choose Custom installation , Installed mysql server and mysql workbench. But when installing to write the configuration file ：
Beginning configuration step: Writing configuration file

Saving my.ini configuration file
The object reference is not set to an instance of the object .
Ended configuration step: Writing configuration file

Wrong content

It got stuck in this place several times , Help