My sister's 10,1 iMac hard drive died and I offered to replace it. The swap went just fine, and I put a Samsung 850 EVO 1TB in there and put it back together. The drive was previously lightly used so I'm not concerned about that. All firmware and such was up to date. AHT shows things are fine, but I can't get El Capitan to install from a USB stick. It counts down until it ways 1 second remaining but never restarts. I'll grab a pic of the error log on this next try, but it was some nonsense about fonts or something.. I think just general file issues. Am I looking at something weird like a bad SATA cable or bad logic board? I'd think AHT would find the logic issue.. and I'll be testing the drive I removed shortly. Just looking for ideas. Thanks. Edit: I did a PRAM and SMC reset before this current (in progress) attempt.