I have an old SimpleTech 320GB external hard drive that im trying to get access to. i plugged it in my pc and turned it on, the blue ring came on and the red power light went on as well but it wont show up on my PC, I checked my disk management and its not there. I'm pretty sure the last time it was used it was on a mac back in like 2014 (if that's important). Im not the most tech savvy and this drive belonged to my mom who passed away any help would be appreciated thank you.