Western Digital Caviar SE WD5000AAJB - 500GB - 7200rpm - - IDE/EIDE - Internal Plus $25 ... 500 GB Hard Drive "plugged light computer flashing inspiron" Questions

...light that used to come on when I connected the HD to the computer doesn't flash anymore, and my computer doesn't recognize it. I've tried plugging the HD into other computers - an HP PC, and two ...