hello! please help me. I have an MSI 1 tb hd, it's working the last time i used it but when i plugged it yesterday, it wasn't detected at all by the computer. I have windows 8.1 OS. I can't see the it in my computer, disk manager and device manager. I once saw it in device manager which is shown as greyed. I uninstall it and restart my computer. I plugged in my hd but it is not detected.