You definitely shouldn't have hardware problems, so there's one stress off your mind at least. Now just recovery.
Assuming you didn't do anything to drastic, you've probably only broken the EFI. This is not he wrost case by far. I would do the following:
- make a Linux live USB, as suggested in the other comments.
- boot up and inspect your disks and the current partition layout.
- double check that your windows drive (NTFS partition) at least exists, bonus points if you can access it, don't stress yet if you cannot.
- given you were going to overwrite fedora, I would delete those partitions, and the opens use ones if they exist as well, and start with a blank segment of disk to work from.
- (optional) expand your boot partition to 500MB/1GB. Small cost really, and will save you future pain if you're exploring other distros. You may have to move the windows partition to do this, this is usually safe enough to do with a GUI partition manager (gparted), perhaps riskier on CLI. Just take it slow and be sure with the steps. Check data access after it's done.
- go back through the install process for opensuse, it should be able to automatically create all the needed partitions with the empty space you have left on the disk.
- boot opensuse, rejoice.
- make a windows boot drive, boot into that and perform a recovery. Note that this might break grub, depending how Microsoft is feeling that day. Second worst case is that you'll have to redo your boot ordering. Worst case is that you'll have to hope back into a live USB and regenerate grub.