I believe that my Macbook air had a virus, so I tried to restore it to it's original system. Now it only shows a black screen with a circle with a line through it. They apparently call it the Prohibitory symbol. Apple support told me to do the command-R and reinstall MacOS. After a few hours, it said that it was not successful.
Then, I did a bit of online research and tried a few different things. The first was doing the shift-option-command-R which also was not succesful and gave me the message macos a server with the specified host name could not be found.
Other attempts I tried the Option--command-R and received the following message: Could not create a preboot volume for APFS install.
I saw some recommendations to erase the ssd....drive, which I attempted, and thought it was successful, but after restarting the computer it is back.
Can anyone help? Or is a visit to the Apple store necessary?
Then, I did a bit of online research and tried a few different things. The first was doing the shift-option-command-R which also was not succesful and gave me the message macos a server with the specified host name could not be found.
Other attempts I tried the Option--command-R and received the following message: Could not create a preboot volume for APFS install.
I saw some recommendations to erase the ssd....drive, which I attempted, and thought it was successful, but after restarting the computer it is back.
Can anyone help? Or is a visit to the Apple store necessary?