I have an HP G4 laptop always hang on POST, I did a system diagnostics and find out the HDD test is failed. After taking out the HDD and read it using HDD reader I am getting "F:\ is not accessible "The parameter is incorrect" the drive always hangs when I click on it and it's not showing the size of the drive. Is this a faulty HDD or is there a way to retrieve the data? My side couldn't allow us to go out for data recovery. Appreciate if any expert advice me on.