I was not able to restore the Mac OS from either USB copy of Sierra, factory image of El Capitan, not a internet recovery of High Sierra. It gives an an error to run diagnostics. Diagnostics says no issue found but a couple days ago it said there may be a problem with the storage device (SSD). I went to the Apple Store and found it passed everything except the partition test which I saw mentioned something about HFS+ integrity that failed. They tried reformatting and running First Aid on my SSD and it still couldn’t reinstall Mac OS. The work authorization is: Attempted to erase and reinstall 10.12 in store but it froze at 78%. Storage diagnostic passed all test except a partition test. Proposed Resolution: Check machine in for SSD triage- run full system diagnostics. Customer is unsure whether he would want to replace SSD if it is failing, call and quote if failure is confirmed. Otherwise re-attempt erase and install.