Dear Friends: I have a MacBook Pro and I had Windows 10 installed on it but last night I believe I

[iphonejuliet]

Dear Friends:

I have a MacBook Pro and I had Windows 10 installed on it but last night I believe I accidentally erased Windows 10. So, I have no other operation system on the MacBook Pro and I do not have internet/wifi/hotspot either. An error message appears saying “Missing Operating System.” Help would be appreciated.

Thank you for your consideration and time.

Sincerely,
Juliet Gray

 

[Cory Cooper]

Hello and welcome.

-Which model MacBook Pro?
-Which version of OS X/macOS?
-How did you install Windows - via Boot Camp, manually on a hard drive partition, etc.?
-Is there still a version of OS X/macOS somewhere on the drive?

C