I have a late 2102 mini that I boot with an external SSD in a firewire case. Lately, when the computer is sleeping it will act like it has shut itself off. The power light remains on on the computer but the power light on the external drive is out. If I power down the computer and restart it, it will boot up normally. Is my problem likely to be that the SSD is going bad or that the drive case has a problem? Or could it be soemthing else, altogether? thanks for any help.