So today, i got a warning message from time machine saying it's past 10 days blah blah, so i plugged it my external harddrive to back up my stuff. At first, it recognized it and i thought it was backing up since i saw that logo turning counterclockwise. Then when it stopped turning, i just close the lid of my MBP (btw running leopard) to eat dinner. When i came back and opened the lid, it says "improper removal of blah blah" but it was still plugged in. so i unplugged it. Later, i saw that the exclamation mark is still there inside the time machine logo, so i plugged the hd back in but now nothing shows up. i have a simpletech hard drive running MBP leopard, the latest. don't know what other info i need to provide, just tell me thank you very much for reading and helping out!