MacBook 4,1 17inch screen vintage 2009. Sentimental value.
Symptoms - no screen, no chimes, no target mode, no means to boot and debug, also no dvd drive since a dvd got stuck.
Was ok run running macOS Maverick before I started trying out ubuntu 2020 which ran ok. Possibly zapped the hard drive while trying out usb grub.efi. Start can be heard running the hard drive, and trying for a dvd. The various starttup key combinations fail to help. A macos backup from last week on external usb ssd has no effect. Maybe this is a EFI firmware fault.
Suggestions welcome.
Symptoms - no screen, no chimes, no target mode, no means to boot and debug, also no dvd drive since a dvd got stuck.
Was ok run running macOS Maverick before I started trying out ubuntu 2020 which ran ok. Possibly zapped the hard drive while trying out usb grub.efi. Start can be heard running the hard drive, and trying for a dvd. The various starttup key combinations fail to help. A macos backup from last week on external usb ssd has no effect. Maybe this is a EFI firmware fault.
Suggestions welcome.