I have a late 2008, 15" macbook pro, which used to run os X 10.11. I have been having minor issues for a couple months, so I figured I would backup and reinstall the OS to see if that would help.
After backing up, I booted into recovery mode to erase and reformat the hard drive. After which, I attempted to reinstall os X through the internet. After two attempts (each of which didn't succeed, it seemed to download just fine, but never installed. I saw no errors, the computer was off wen I came back to it) The computer started to show the file with a question mark on bootup.
From this point on, nothing has worked on the computer. Recovery mode wont start. Internet recovery mode wont start. Both simply show the aforementioned file and question mark. If I try to select a boot drive, it doesn't show the file, but it only displays the mouse on the whitish/grayish startup background. The mouse moves, but I cant't actually do anything; there is nothing to click on.
I have reset the SMC, and the NVRAM. I have also tried reformatting the hard drive, again (Using a windows desktop, formatted to exFAT, but it changed nothing) While I had it in the windows desktop, I also used Seatools (the hard drive is a 1TB seagate SSD/HDD combo) to run diagnostics on the drive, but it showed no problems, from a 'Long Generic' or a 'Short Drive Self Test'.
What else can I try to fix this? I have an osx 10.11.5 disk image on a thumb drive, but I haven't even been able to see that hardware has been connected, much less choose a boot drive.
I have access to ethernet, another macbook (about 2013-ish), a usb connector for my hard drive, a windows desktop running windows 7 ultimate, and whatever other resources a university might offer to their students in terms of tech support (However, being an electrical engineering student, I can't say I've ever been impressed by their ability to help)
Best Answer
Your MacBook Pro cannot find a system to boot from, hence the question mark.
In addition, your troubleshooting was partly in error because you shouldn't have formatted the drive in exFAT format if you intend to install OS X on it.
Since you have access to another MacBook and since it appears your USB thumb drive with OS X 10.11.5 on it isn't a bootable disk, I suggest you startup your MacBook Pro in Target Disk Mode and install OS X using the other MacBook. This approach assumes the following:
If not I'm hoping you can get access to either or both of these from your University's tech support.
Assuming you can proceed, follow these steps:
NOTE:
If you haven't actually got an installer, you can use the Mac App Store to redownload it. In doing so you'll have to log into your Apple ID account (under the Store menu) on the Mac App Store and go to the Purchased window to find the installer you want to download again. This assumes you have previously used your account to downloaded the installer at some point.
Hope this helps. Let us know how you go.