I installed a new hybrid drive (Seagate 1TB SSD/HDD) in my ASUS G73jh and installed Windows 8.1 - everything was fine, I was copying iTunes media and various files from my old hard drive (through a SATA cable-USB 2.0 port) to the new one when it froze. Now freezes at various points during boot. Thinking it was a bad hybrid drive , I exchanged it for a new one, same model, and it's doing the exact same thing.