It *sounds*, from your description, like you had too much beef on your card for your PSU to handle. I've had this happen multiple times in the past when using a PSU that's juuuust barely rated to handle the wattage my card and other components want.
I'd recommend getting a PSU replacement that beats the minimum required wattage by at least 250. If your graphics card says it requires a 400w PSU, get a 750 or better. That sort of thing.
Just a suggestion...
--sofaspud
--"Listening to your kid is the audio equivalent of a Salvador Dali painting, Spud." --OpMegs
I'd recommend getting a PSU replacement that beats the minimum required wattage by at least 250. If your graphics card says it requires a 400w PSU, get a 750 or better. That sort of thing.
Just a suggestion...
--sofaspud
--"Listening to your kid is the audio equivalent of a Salvador Dali painting, Spud." --OpMegs