I have an Lenovo Y410P notebook. It is running both win7 and win8.1 on my HDD. I have installed an Intel Pro 1500 SSD and set SATA mode to AHCI. I tried to install windows on the SSD. I can only install win7 on it whereas it can't be recognized under the win8(or win8.1) setup enviroment, and it is the same even if the SSD runs as a 2nd drive under win8.1 (when I changed SATA mode to IDE, all turned to be well).
When I cold boot win7 from SSD under AHCI mode, it seems to be all right until I have installed the RST driver, and the system would randomly freeze after a few minutes, and then the screen would go black or get a blue screen (sorry, the error code I can't remember). I also find it was replicated after sleep. But when I uninstalled the the RST driver, it turned to be all right again.