High Sierra on 2009 Macbook problem after update

[AndreeTheG]

Hi, I've just installed High Sierra on my early 2009 Macbook 5,2 white.
All perfect, even the patches. I've done an update 10.13.6 to High Sierra via Apple Store. After reboot non of the patches working anymore (tryied to reinstall but nothing happened, tryied to do again MacOS Post install but nothing). Trackpad doesn't works anymore, change volume via keyboard and bright of screen.
I tryied to reinstall HS with the USB done, but it still remains on 10.13.6.

How can I rollback to 10.13.4 without deleting files? Thanks

 

[treekram]

You should try a SMC reset.
https://support.apple.com/en-us/HT201295

If that doesn't work, try a NVRAM reset. You may lose some settings in doing this.
https://support.apple.com/en-us/HT204063

Do you have a backup of your computer before the update? If not, reverting would be more difficult.