I took out my HDD yesterday and I plugged it back in today and tried to reboot, but the drive read error restart message shows. I run Windows 8.1. All I did was literally take it out, let it stay out overnight and plugged back in. I tried changing SATA ports or wires, but that does not seem to be the problem. I set my BIOS setting to default with my HDD as priority Boot but it doesn't work. The HDD isn't dead. It runs with a little hum which is normal.