I have been using my Red cold cathode for about a week, and it has been working great. I was upgrading the computer for about a week, I went to boot it up, and the light didn't turn on.... I thought that the light might have blown somehow, so I tried my friend's cathode light, and it didn't work in my comp..... (I have a 400 watt PSU by the way) THEN....I connected the lights to their own PSU, and it still didn't work.... So I myself am out of ideas.... anyone help please? What is a case without a cathode? =)