My machine was built by me. Not OEM. Asus P8Z77V, i5 3570k, GTX970, 16GB RAM.
As mentioned earler, after I did the 'upgrade' I removed my SSD (Crucial) and 3 HDDs (Seagate) and replaced them with 2 new HDDs (HGST) and a new SSD (Samsung) and then did the fresh install. No complaints about...