I was given a brand new 300 GB external hard drive (USB) from my employer. When I connected it to my laptop, Windows XP installed it fine and said "This Hardware is Now Ready To Use" or whatever it says when it's done installing. Anyway, it never shows up in My Computer, despite countless refreshes. When I right click My Computer and click Manage, the manage window just hangs and never shows up until I unplug or turn off the hard drive, after which the manage window will pop up instantly. What gives? Also, if the hard drive is plugged up when I reboot my computer, my computer will not boot and will hang after the Windows XP loading screen, but if I unplug it or turn it off, it will resume booting.