SSD Sandisk G3 120GB probl

the G3 ssd was the firs retail ssd sandisk released several years ago. If you bought this SSD I would recommend returning it for a refund and getting one of the current line SSD. Since you are using a MAc get an Ultra+ or Extreme Pro. From some posts on here there are some issues waking from sleep with the Extreme II on Mac that are not reported with other models.